Together, each \(x \in \theta_0\) and each \(y \in \theta_1\) intersect, making the map surjective.

In term of congruence, it means \(I_i \vee I_j = R\), which make decomposition map for algebra with permutable congruence surjective

Dousa, Thomas M. “Facts and Frameworks in Paul Otlet’s and Julius Otto Kaiser’s Theories of Knowledge Organization.” Bulletin of the American Society for Information Science and Technology 36, no. 2 (2010): 19–25. https://doi.org/10.1002/bult.2010.1720360208.

alphabetical order vs. "semantic order" (by which I mean ordering ideas based on their proximity to each other in an area or sub-area of expertise)

Unlike Luhmann's numbers which served only as addresses, Paul Otlet's numbers were intimately linked to subject headings and became a means of using them across languages to imply similar meanings.

Compare the various organizational structures of Otlet, Kaiser, and Luhmann.

Seemingly their structures were dictated by the number of users and to some extent the memory of those users with respect to where to find various things.

Otlet as a multi-user system with no single control mechanism or person, other than the decimal organizing standard (in his case a preference for UDC), was easily flexible for larger groups. Kaiser's system was generally designed, built and managed by one person but intended for use by potentially larger numbers of people. He also advised a conservative number of indexing levels geared toward particular use-cases (that is a limited number of heading types or columns/rows from a database perspective.) Finally, Luhmann's was designed and built for use by a single person who would have a more intimate memory of a more idiosyncratic system.

Desmond, Matthew. Poverty, by America. 1st ed. New York: Crown, 2023. https://amzn.to/40Aqzlp

Annotation URL: urn:x-pdf:eefd847a2a1723651d1d863de5153292

Alternate annotation link: https://jonudell.info/h/facet/?user=chrisaldrich&max=100&exactTagSearch=true&expanded=true&url=urn%3Ax-pdf%3Aeefd847a2a1723651d1d863de5153292

for - developmental journey the great transition - requires each of us to learn how to form universal friendship - highly realized behavior - John Churchill

for - webcast - youtube - Amrit - Sandhu - Ex-Buddhist Monk reveals secret Tibetan Prophecy happening right now! Dr John Churchill Psy.D - adjacency - bodhisattva's universal vow of compassion - Deep Humanity individual / collective gestalt - Ernest Becker - Book - The birth and death of meaning - This adjacency is discussed more in the annotations

summary - A very good interview - Interdiscplinary presentation of psychology and Buddhist ideas - When he spoke about the relationship between the individual and the group, an epiphany of my own work on the Deep Humanity idea of the individual / collective gestalt suddenly took on a greater depth - An adjacency revealed itself upon his words, between - the universal compassion of the bodhisattva - Deep humanity idea of the individual / collective gestalt - the Deep Humanity Common Human Denominators (CHD) as pointing to the self / other fundamental identity - Freud, Winnicott, Kline's idea of the self formed by relationship with the other, in particular the mOTHER (Deep Humanity), the Most significant OTHER

source - referral from @Gyuri

to - Karuna Mandala - - https://hyp.is/Ghid4JwcEe-PK7OOKz5Vig/www.karunamandala.org/directors-advisors

for - example - individual's evolutionary learning journey - new self revisiting old self and gaining new insight - universal compassion of Buddhism and the individual / collective gestalt - adjacency - the universal compassion of the bodhisattva - Deep humanity idea of the individual / collective gestalt - the Deep Humanity Common Human Denominators (CHD) as pointing to the self / other fundamental identity - Freud, Winnicott, Kline's idea of the self formed by relationship with the other, in particular the mOTHER (Deep Humanity), the Most significant OTHER

adjacency - between - the universal compassion of the bodhisattva - Deep humanity idea of the individual / collective gestalt - the Deep Humanity Common Human Denominators (CHD) as pointing to the self / other fundamental identity - Freud, Winnicott, Kline's idea of the self formed by relationship with the other, in particular the mOTHER (Deep Humanity), the Most significant OTHER - adjacency relationship - When I heard John Churchill explain the second turning, - the Mahayana approach, - I was already familiar with it from my many decades of Buddhist teaching but with - those teachings in the rear view mirror of my life and - developing an open source, non-denominational spirituality (Deep Humanity) - Hearing these old teachings again, mixed with the new ideas of the individual / collective gestalt - This becomes an example of Indyweb idea of recording our individual evolutionary learning journey and - the present self meeting the old self - When this happens, new adjacencies can often surface - In this case, due to my own situatedness in life, the universal compassion of the bodhisattva can be articulated from a Deep Humanity perspective: - The Freudian, Klinian, Winnicott and Becker perspective of the individual as being constructed out of the early childhood social interactions with the mOTHER, - a Deep Humanity re-interpretation of "mother" to "mOTHER" to mean "the Most significant OTHER" of the newly born neonate. - A deep realization that OUR OWN SELF IDENTITY WAS CONSTRUCTED out of a SOCIAL RELATIONSHIP with mOTHER demonstrates our intertwingled individual/collective and self/other - The Deep Humanity "Common Human Denominators" (CHD) are a way to deeply APPRECIATE those qualities human beings have in common with each other - Later on, Churchill talks about how the sacred is lost in western modernity - A first step in that direction is treating other humans as sacred, then after that, to treat ALL life as sacred - Using tools like the CHD help us to find fundamental similarities while divisive differences might be polarizing and driving us apart - A universal compassion is only possible if we vividly see how we are constructed of the other - Another way to say this is that we see others not from an individual level, but from a species level

for - Buddhist language, but used for a universal model - John Churchill

This is why we are raising the money - to offer this benign parenting support of helping us all to pay for what we need so that we do what we love For now, I am using thew term Universal Learning Income

for - quote / critique- Much better this great irregularity than universal squalor - Andrew Carnegie

quote / critique - Much better this great irregularity than universal squalor - Andrew Carnegie - Carnegie is writing from his perspective of the contrast between - life when he grew up, lived in an age of perceived universal squalor and - the world he helped shape through industrial mass production that produced high quality goods in such numbers that they became available to all - Yet, even before Carnegie, inequality had existed, for the world prior to Carnegie had its share of kings, queens, emperors and authoritarians - Even today, the best we might say of modern democracies is a decoupling of wealth and official governance - although even that is inaccurate as the thriving lobbying industry allows industrial magnates to decide upon rules of governance that are friendly towards their businesses - In contrast, from the commons perspective, and especially from the Cosmolocal movement of production, there is proposed a road that leads to - much less and much more tolerable levels of inequality and no universal squalor - a civilization existing within safe and just earth system boundaries

for - empathy - deep meaning - universal consciousness perspective - Rupert Spira

for - metaphor - analogy - dissociation - Bernardo Kastrup - to - 3D imax cinema - localize Rupert Spira - terminology - dissociate - Bernado Kastrup - terminology - localize and contract - Rupert Spira - universal consciousness contracts to finite human consciousness - question - meaning of dissociate - Bernardo Kastrup

metaphor - analogy - dissociation - Bernardo Kastrup - to - 3D imax cinema - Rupert Spira - At 3d Imax cinema, we wear a pair of special glasses - that make the otherwise fuzzy image to acquire a 3rd dimension - In the same way, our raw universal consciousness is like the fuzzy pattern we see on the 3d Imax screen when we DON'T have any special glasses on - When we perceive and think, it is like putting on the 3D glasses in the Imax theatre and suddenly we see objects with great clarity - Spira talks about universal consciousness "localizing" within its own activity - in the form of a finite mind of a human being

question - meaning of dissociate - Bernardo Kastrup - Does Kastrup mean that we infinite / universal consciousness dissociates from itself into the finite human consciousness? - answer - It appears so, as at time 45:50, Spira summarizes Kastrup's views on dissociation

for - adjacency - key insight - quote - localization enables (infinite or universal consciousness) to perceive itself - Rupert Spira - discerning single voice at a busy party metaphor - existential isolation - umwelt

adjacency - between - key insight - quote - localization enables (infinite or universal consciousness) to perceive itself - Rupert Spira - discerning single voice at a busy party metaphor - existential isolation - adjacency relationship - quote - localization enables (infinite or universal consciousness) to perceive itself - Rupert Spira - This localization process enables (infinite) consciousness to perceive itself as the universe because - infinite consciousness cannot perceive its own activity directly - because if infinite consciousness were to perceive the universe directly - it would have to do so from every single point of view in the universe - It would be the deepest, darkest black image you could imagine - So in order to perceive an object - (infinite) consciousness must localize itself as an apparently separate subject so - the apparent localization of our self or - the dissociation of ourselves - as finite minds out of infinite consciousness enables - perception and - thought

• There is a metaphor that applies here:
  • At a busy dinner party, many people are talking at the same time
  • As the number of people approach infinite, the signal becomes more difficult to detect
  • In the same manner, as the activities of the universe are seemingly unbounded, how could infinite consciousness possibly observe its own infinite entirety?
  • Existential isolation is deemed depressing because it makes us feel intrinsically separated and disconnected from others, yet
    • it may be very necessary
  • Can you imagine hearing and understanding the voices of every human being, much less every living being?
  • An individual human does not have the capacity to process all that information
  • In the same manner, the body of every living organism is fine tuned for only one specific set of unwelts
  • How would we process the unbound amounts of information if we had an infinite number of different detectors?

for - key insight - universal consciousness contracts to localized human consciousness - experiences its own activity as the outside universe - Rupert Spira

for - comparison - Amazon Prime - Castle Rock - Stephen King - compared to - Michael Levin caterpillar to butterfly metamorphosis - adjacency - universal - vs localized consciousness - empathy - Michael Levin - caterpillar to butterfly

adjacency - between - Stephen King movie "castle rock" - universal consciousness - localized, individual consckousness - empathy - adjacency relationship - Bernardo compares the Stephen King movie series "Castle Rock" with ghostly beings taking over the identify of an existing physical body. - Universal consciousness is in all of us - but we strongly identify with the localized consciousness - In Michael Levin's caterpillar to butterfly process, - the living being has memories of a caterpillar but what happens when it becomes a butterfly? Those memories don't confer any meaning to the butterfly - But beneath both the butterfly and the caterpillar, the universal consciousness is at the ground layer - When we experience others as ourselves, because we have the same universal consciouness, - then we can truly enact empathy as an expression of recognition

for - quotation - Rupert Spira - reality lies behind the multiplicity and diversity of appearances and is concealed by them

quotation - Rupert Spira - reality lies behind the multiplicity and diversity of appearances and is concealed by them - A subset of this claim is that the same universal consciousness is in the multiplicity and diversity of appearances of human INTERbeCOMings

This page is for Guidelines 3.0

What does universal anxiety/fear have to do in communication?

Part 4: COMPLETE Olympia SM3 Service and Repair Series: STICKY RIBBON LIFTER by [[The HotRod Typewriter Co.]]

The universal bar lifts the ribbon vibrator.

Adjustment points to adjust the ribbon lift heights for issues with red/black on bichrome use.

Maximum travel of the universal bar adjustment screws on crossbar that attaches to springs. timestamp 5:29

Screws at the ends of the cross bar which are attached to the key springs can be adjusted slightly to provide for heavier or lighter touch control. Timestamp 6:07

for - key insight - Wage stagnation is a universal problem of the working class and reducing racial and gender inequality goes hand-in-hand with reducing class inequality.

Typewriter Video Series - Episode 100: Loosen Up, Brother! by [[Joe Van Cleave]]

This is exactly what Elio lacks and tries to find in himself, a holistic idea of who he is and when Oliver demonstrates his many contradictions with yet the fact that he "knows himself", it intimidates and spins Elio's worldview.

for - quote - better approach than gene sequence as universal panecea

quote - better approach than gene sequence as universal panecea - (see quote below)

• Look at the high-level organization of the system
  • the living system
• Locate what is going wrong there and then work down to find what you might do
• at lower levels with a drug or any other kind of treatment for that matter to put it right
• That works much better than trying to go the other way because
  • going the other way, the space for
    • possible molecules and
    • possible effects and
    • even more possible combinations of effects
  • because those complex diseases are going to require combinations of treatment
  • There are too many
  • You can't do clinical trials on all of those possibilities
  • It's just far too expensive
  • So I think we just take need to take a different approach to medical research
    • to try to benefit from the human genome sequencing
    • in a way that's different from what they originally promised

Oliver wrote a book on Heraclitus, the main connector between his ideology, characterization, and the theory of universal flux, that one may not necessarily be one's past temporal part -- but one who continues it, like an illusion of movement.

This is a restatement that a particular system should be customized to its users.

There is potential that a system could be applied universally, but it requires a very large amount of data and metadata to suit the needs of a greater number of people and use cases. It also requires a reasonable amount of work in practical use to make it operate as expected.

The Mundaneum was likely close on paper and Google comes close to this, but still isn't perfect.

quote via ¶76 and 92

money and relationship with it

aging and money

major universal truth! ppl do this now

967F primer

Some of Newton's notes come from a 1654 edition of: Gregory, Francis. Ονομαστικὸν βραχύ; sive, Nomenclatura brevis, Anglo-Latino-Græca, in usum Scholæ Westmonasteriensis. Per F. G. [i.e. Francis Gregory.] Editio vigesima secunda, etc. John Meredith, in trust for Royston and Elizabeth Meredith, 1710.

968f

968F

• for: panpsychism, Spinoza, universal consciousness

Universal media

• for: symbiocene, ecozoic, ecocivilization, eco-civilization, animal communication, inter-species communication, Azi Raskin, Earth Species Project, umwelt

• summary

  • Very interesting talk given by Aza Raskin, founder of:
    • https://www.earthspecies.org/
    • cofounder of https://www.humanetech.com/
  • on two main themes:
    • how AI is being used to decode language communication of many different plant and animal species, including inter-fauna, inter-flora and fauna-flora cross communication
    • how AI used to study human languages has detected a universal meaning shape between all languages.

• reference

  • https://www.earthspecies.org/

• for: question, question - universal meaning shape for animal communication

• comment

  • this would be an amazing project for TPF and BEing journeys. Could we actually talk to animals and plants to ask them about how we humans are treating them?

• for: language, quote, quote - Aza Raskin, quote - universal language shape, quote - universal meaning shape, CHD, CHD - language - universal meaning shape

• quote

  • pretty much every human language that's been tried ends up fitting in a kind of universal human meaning shape
  • which I think is just so profound especially in this time of such deep division that there is a universal hidden structure underlying us all

https://www.britannica.com/topic/RUR

• for: KLM cap, air travel cap, flight cap, degrowth
• comment
  • “In a few months’ time, this government will not be accountable for the severe consequences that may follow from the Schiphol decision, particularly with respect to relations with the Netherlands’ trading partners, and lost jobs and prosperity at home,”
  • This comment ONLY refers to things economic, and NOTHING to climate boiling, which air travel is a significant contributor to.'
  • If they saw it coming from years ago, why did they not adapt? It is their failure to adapt itself that places themselves in a self-created position of vulnerability
  • During a transition as unprecedented as this, the governments of the world must invoke policy that gives protection to workers in industries such as the airline industry and all industries downstream of it so that they can survive the transition as such jobs vanish or morph.
    • Indeed, this is one of the major tenets of degrowth advocates. A Universal Basic Income and job retraining to sustainable jobs is the responsible thing to do to protect from job losses.

This is one of the things that doesn't seem to be being explored enough presently, or at least I'm not seeing it outside of the SAG and WGA strikes where it seems to be a side issue rather than a primary issue.

category theory + zettelkasten... hmmm... feels a bit like Leibniz chasing a universal language

what is a zettelkasten monad?

• for:UBI, universal basic income
• for: UBI, universal basic income, futures
• The physical labor required to maintain life’s essential conditions against the forces of entropy.
• The intellectual labor required to constantly test and advance the individual and collective maps of our ever-evolving territory.

• The spiritual labor required to continuously renew our sense of individual and collective connection to all that is.

• comment

  • two of these are articulating the entanglement of the individual and collective.

The technology is here, now the governance of the UN to make all science open. Until that time, add +'sci-hub.se'. (Or any other link that works (sci-hub.ru, sci-hub.li)

https://www.washingtonpost.com/archive/local/2004/02/12/obituaries/359ea8ea-60b0-4d32-b337-af9c3778aee3/

Hans H. Wellisch died on 2004-02-06.

reply to drogers8 at https://www.reddit.com/r/antinet/comments/13eyg8p/comment/jkaksn4/?utm_source=reddit&utm_medium=web2x&context=3

You can find some basic top level or second level DDC listings online, but to get the full set of listings, you've got to subscribe to the system which is updated every few years, something only library systems and large publishers typically do. To give yourself an idea of how deep this rabbit hole goes the DDC 23 is four volumes long and each volume is in the 1,000 page range. The DDC 23 self-identifies as 0.25.4'31-dc22. For most categories DDC generally only goes as deep as the thousands place (like Finsler geometry) though others will go slightly deeper usually to designate locations/cities. Most libraries only categorize to the tenths place, and sometimes these numbers can be found on the copyright page of books, often with the DDC volume number. I mentioned the UDC in that piece, but didn't give any links, but you could try:<br /> - https://udcsummary.info/php/index.php?lang=en - https://udcc.org/index.php/site/page?view=subject_coverage - https://en.wikipedia.org/wiki/Universal_Decimal_Classification

Honestly, you're wasting time and making way more work for yourself to adopt one of these numbering methods for a Luhmann-esque zettelkasten. Try asking yourself this question: What benefits/affordances will I get in the long run for having my numbering system mirror the DDC or UDC? (Unless you can come up with a really fantastic answer, you're just making more work to look up headings/numbers on a regular basis.)

In practice the numbers are simply addresses so you can quickly find things again using your index. If you're doing threads of cards (folgezettel), you're going to very quickly have tangentially related ideas of things mixed together anyway. (As an example, I've got lots of science and even some anthropology mixed into my math section, so having DDC numbers on those would be generally useless at the end of the day.) If it helps, Nicolas Gatien has a pretty reasonable and short video which makes this apparent: https://www.youtube.com/watch?v=tdHH3YjOnZE.

reply to u/drogers8 at https://www.reddit.com/r/antinet/comments/13eyg8p/extended_numbering_and_why_use_outline_of/

Based on my research, Scott Scheper was the one of the original source for people adopting the Academic Outline of Disciplines. I've heard him say before that he recommends it only as a potential starting place for people who are new to the space and need it as a crutch to get going. It's an odd suggestion as almost all of the rest of his system is so Luhmann-based. I suspect it's a quirk of how he personally started and once moving it was easier than starting over. He also used his own ZK for showing others, and it's hard to say one thing in a teaching video when showing people something else. Ultimately it's hard to mess up on numbering choices unless you're insistent on using only whole numbers or natural numbers. I generally wouldn't suggest complex numbers either, but you might find some interesting things within your system if you did. More detail: https://boffosocko.com/2022/10/27/thoughts-on-zettelkasten-numbering-systems/ The only reason to have any standardized base or standardized numbers would be if you were attempting to have a large shared ZK with others. If this is your intent, then perhaps look at the Universal Decimal Classification, though a variety of things might also work including Dewey Decimal.

https://www.pendrivelinux.com/universal-usb-installer-easy-as-1-2-3/

reply to u/stjeromeslibido at https://www.reddit.com/r/Zettelkasten/comments/10qw4l5/are_there_symbols_for_supported_by_or/

In addition to the other excellent suggestions, I don't think you'll find anything specific that that was used historically for these, but there are certainly lots of old annotation symbols you might be able to co-opt for your personal use.

Evina Steinova has a great free cheat sheet list of annotation symbols: The Most Common Annotation Symbols in Early Medieval Western Manuscripts (a cheat sheet).

More of this rabbit hole:

• Steinová, Evina. Notam Superponere Studui: The Use of Annotation Symbols in the Early Middle Ages. Brepols, 2019.
• Cappelli, Adriano. The Elements of Abbreviation in Medieval Latin Paleography. University of Kansas Libr., 1984.
• Coulson, Frank, and Robert Babcock. The Oxford Handbook of Latin Palaeography. Oxford University Press, 2020.
• Lindsay, W. M. Notae Latinae. Cambridge University Press, 2013. https://archive.org/download/notaelatinaeacco00lindrich/notaelatinaeacco00lindrich.pdf.
• Bains, Doris. A Supplement to Notae Latinae (Abbreviations in Latin Mss. of 850 to 1050 A.D.). Cambridge [England] University Press, 1936. http://archive.org/details/supplementtonota0000bain.

(Nota bene: most of my brief research here only extends to Western traditions, primarily in Latin and Greek. Obviously other languages and eras will have potential ideas as well.)

Tironian shorthand may have something you could repurpose as well: https://en.wikipedia.org/wiki/Tironian_notes

Some may find the auxiliary signs of the Universal Decimal Classification useful for some of these sorts of notations for conjoining ideas.

Given the past history of these sorts of symbols and their uses, perhaps it might be useful for us all to aggregate a list of common ones we all use as a means of re-standardizing some of them in modern contexts? Which ones does everyone use?

Here are some I commonly use:

Often for quotations, citations, and provenance of ideas, I'll use Maria Popova and Tina Roth Eisenberg's Curator's Code:

• ᔥ for "via" to denote a direct quotation/source— something found elsewhere and written with little or no modification or elaboration (reformulation notes)
• ↬ for "hat tip" to stand for indirect discovery — something for which you got the idea at a source, but modified or elaborated on significantly (inspiration by a source, but which needn't be cited)

Occasionally I'll use a few nanoformats, from the microblogging space, particularly

• L: to indicate location

For mathematical proofs, in addition to their usual meanings, I'll use two symbols to separate biconditionals (necessary/sufficient conditions)

• (⇒) as a heading for the "if" portion of the proof
• (⇐) for the "only if" portion

Some historians may write 19c to indicate 19th Century, often I'll abbreviate using Roman numerals instead, so "XIX".

Occasionally, I'll also throw drolleries or other symbols into my margins to indicate idiosyncratic things that may only mean something specifically to me. This follows in the medieval traditions of the ars memoria, some of which are suggested in Cornwell, Hilarie, and James Cornwell. Saints, Signs, and Symbols: The Symbolic Language of Christian Art 3rd Edition. Church Publishing, Inc., 2009. The modern day equivalent of this might be the use of emoji with slang meanings or 1337 (leet) speak.

Thoughts on Zettelkasten numbering systems

I've seen variations of the beginner Zettelkasten question:

"What happens when you want to add a new note between notes 1/1 and 1/1a?"

asked at least a dozen times in the Reddit fora related to note taking and zettelkasten, on zettelkasten.de, or in other places across the web.

Dense Sets

From a mathematical perspective, these numbering or alpha-numeric systems are, by both intent and design, underpinned by the mathematical idea of dense sets. In the areas of topology and real analysis, one considers a set dense when one can choose a point as close as one likes to any other point. For both library cataloging systems and numbering schemes for ideas in Zettelkasten this means that you can always juxtapose one topic or idea in between any other two.

Part of the beauty of Melvil Dewey's original Dewey Decimal System is that regardless of how many new topics and subtopics one wants to add to their system, one can always fit another new topic between existing ones ad infinitum.

Going back to the motivating question above, the equivalent question mathematically is "what number is between 0.11 and 0.111?" (Here we've converted the artificial "number" "a" to a 1 and removed the punctuation, which doesn't create any issues and may help clarify the orderings a bit.) The answer is that there is an infinite number of numbers between these!

This is much more explicit by writing these numbers as:<br /> 0.110<br /> 0.111

Naturally 0.1101 is between them (along with an infinity of others), so one could start here as a means of inserting ideas this way if they liked. One either needs to count up sequentially (0, 1, 2, 3, ...) or add additional place values.

Decimal numbering systems in practice

The problem most people face is that they're not thinking of these numbers as decimals, but as natural numbers or integers (or broadly numbers without any decimal portions). Though of course in the realm of real numbers, numbers above 0 are dense as well, but require the use of their decimal portions to remain so.

The tough question is: what sorts of semantic meanings one might attach to their adding of additional place values or their alphabetical characters? This meaning can vary from person to person and system to system, so I won't delve into it here.

One may find it useful to logically chunk these numbers into groups of three as is often done using commas, periods, slashes, dashes, spaces, or other punctuation. This doesn't need to mean anything in particular, but may help to make one's numbers more easily readable as well as usable for filing new ideas. Sometimes these indicators can be confusing in discussion, so if ever in doubt, simply remove them and the general principles mentioned here should still hold.

Depending on one's note taking system, however, when putting cards into some semblance of a logical sort-able order (perhaps within a folder for example), the system may choke on additional characters beyond the standard period to designate a decimal number. For example: within Obsidian, if you have a "zettelkasten" folder with lots of numbered and named files within it, you'll want to give each number the maximum number of decimal places so that when doing an alphabetic sort within the folder, all of the numbered ideas are properly sorted. As an example if you give one file the name "0.510 Mathematics", another "0.514 Topology" and a third "0.5141 Dense Sets" they may not sort properly unless you give the first two decimal expansions to the ten-thousands place at a minimum. If you changed them to "0.5100 Mathematics" and "0.5140 Topology, then you're in good shape and the folder will alphabetically sort as you'd expect. Similarly some systems may or may not do well with including alphabetic characters mixed in with numbers.

If using chunked groups of three numbers, one might consider using the number 0.110.001 as the next level of idea between them and then continuing from there. This may help to spread some of the ideas out as surely one may have yet another idea to wedge in between 0.110.000 and 0.110.001?

One can naturally choose almost any any (decimal) number, so long as it it somewhat "near" the original behind which one places it. By going out further in the decimal expansion, one can always place any idea between two others and know that there will be a number that it can be given that will "work".

Generally within numbers as we use them for mathematics, 0.100000001 is technically "closer" by distance measurement to 0.1 than 0.11, (and by quite a bit!) but somehow when using numbers for zettelkasten purposes, we tend to want to not consider them as decimals, as the Dewey Decimal System does. We also have the tendency to want to keep our numbers as short as possible when writing, so it seems more "natural" to follow 0.11 with 0.111, as it seems like we're "counting up" rather than "counting down".

Another subtlety that one sees in numbering systems is the proper or improper use of the whole numbers in front of the decimal portions. For example, in Niklas Luhmann's system, he has a section of cards that start with 3.XXXX which are close to a section numbered 35.YYYY. This may seem a bit confusing, but he's doing a bit of mental gymnastics to artificially keep his numbers smaller. What he really means is 3000.XXX and 3500.YYY respectively, he's just truncating the extra zeros. Alternately in a fully "decimal system" one would write these as 0.3000.XXXX and 0.3500.YYYY, where we've added additional periods to the numbers to make them easier to read. Using our original example in an analog system, the user may have been using foreshortened indicators for their system and by writing 1/1a, they may have really meant something of the form 001.001/00a, but were making the number shorter in a logical manner (at least to them).

The close observer may have seen Scott Scheper adopt the slightly longer numbers in the thousands (like 3500.YYYY) as a means of remedying some of the numbering confusion many have when looking at Luhmann's system.

Those who build their systems on top of existing ones like the Dewey Decimal Classification, or the Universal Decimal Classification may wish to keep those broad categories with three to four decimal places at the start and then add their own idea number underneath those levels.

As an example, we can use the numbering for Finsler geometry from the Dewey Decimal Classification wikipedia page shown as:

``` 500 Natural sciences and mathematics

510 Mathematics

    516 Geometry

        516.3 Analytic geometries

            516.37 Metric differential geometries

                516.375 Finsler geometry

```

So in our zettelkasten, we might add our first card on the topic of Finsler geometry as "516.375.001 Definition of Finsler geometry" and continue from there with some interesting theorems and proofs on those topics.

Of course, while this is something one can do doesn't mean that one should do it. Going too far down the rabbit holes of "official" forms of classification this way can be a massive time wasting exercise as in most private systems, you're never going to be comparing your individual ideas with the private zettelkasten of others and in practice the sort of standardizing work for classification this way is utterly useless. Beyond this, most personal zettelkasten are unique and idiosyncratic to the user, so for example, my math section labeled 510 may have a lot more overlap with history, anthropology, and sociology hiding within it compared with others who may have all of their mathematics hiding amidst their social sciences section starting with the number 300. One of the benefits of Luhmann's numbering scheme, at least for him, is that it allowed his system to be much more interdisciplinary than using a more complicated Dewey Decimal oriented system which may have dictated moving some of his systems theory work out of his politics area where it may have made more sense to him in addition to being more productive on a personal level.

Of course if you're using the older sort of commonplacing zettelkasten system that was widely in use before Luhmann's variation, then perhaps using a Dewey-based system may be helpful to you?

A Touch of History

As both a mathematician working in the early days of real analysis and a librarian, some of these loose ideas may have occurred tangentially to Gottfried Wilhelm Leibniz (1646 - 1716), though I'm currently unaware of any specific instances within his work. One must note, however, that some of the earliest work within library card catalogs as we know and use them today stemmed from 1770s Austria where governmental conscription needs overlapped with card cataloging systems (Krajewski, 2011). It's here that the beginnings of these sorts of numbering systems begin to come into use well before Melvil Dewey's later work which became much more broadly adopted.

The German "file number" (aktenzeichen) is a unique identification of a file, commonly used in their court system and predecessors as well as file numbers in public administration since at least 1934. We know Niklas Luhmann studied law at the University of Freiburg from 1946 to 1949, when he obtained a law degree, before beginning a career in Lüneburg's public administration where he stayed in civil service until 1962. Given this fact, it's very likely that Luhmann had in-depth experience with these sorts of file numbers as location identifiers for files and documents. As a result it's reasonably likely that a simplified version of these were at least part of the inspiration for his own numbering system. † ‡

Your own practice

At the end of the day, the numbering system you choose needs to work for you within the system you're using (analog, digital, other). I would generally recommend against using someone else's numbering system unless it completely makes sense to you and you're able to quickly and simply add cards to your system with out the extra work and cognitive dissonance about what number you should give it. The more you simplify these small things, the easier and happier you'll be with your set up in the end.

References

Krajewski, Markus. Paper Machines: About Cards & Catalogs, 1548-1929. Translated by Peter Krapp. History and Foundations of Information Science. MIT Press, 2011. https://mitpress.mit.edu/books/paper-machines.

Munkres, James R. Topology. 2nd ed. 1975. Reprint, Prentice-Hall, Inc., 1999.

Hello u/sscheper,

Let me start by thanking you for introducing me to Zettelkasten. I have been writing notes for a week now and it's great that I'm able to retain more info and relate pieces of knowledge better through this method.

I recently came to notice that there is redundancy in my index entries.

I have two entries for Number Line. I have two branches in my Math category that deals with arithmetic, and so far I have "Addition" and "Subtraction". In those two branches I talk about visualizing ways of doing that, and both of those make use of and underline the term Number Line. So now the two entries in my index are "Number Line (Under Addition)" and "Number Line (Under Subtraction)". In those notes I elaborate how exactly each operation is done on a number line and the insights that can be derived from it. If this continues, I will have Number Line entries for "Multiplication" and "Division". I will also have to point to these entries if I want to link a main note for "Number Line".

Is this alright? Am I underlining appropriately? When do I not underline keyterms? I know that I do these to increase my chances of relating to those notes when I get to reach the concept of Number Lines as I go through the index but I feel like I'm overdoing it, and it's probably bloating it.

I get "Communication (under Info. Theory): '4212/1'" in the beginning because that is one aspect of Communication itself. But for something like the number line, it's very closely associated with arithmetic operations, and maybe I need to rethink how I populate my index.

Presuming, since you're here, that you're creating a more Luhmann-esque inspired zettelkasten as opposed to the commonplace book (and usually more heavily indexed) inspired version, here are some things to think about:<br /> - Aren't your various versions of number line card behind each other or at least very near each other within your system to begin with? (And if not, why not?) If they are, then you can get away with indexing only one and know that the others will automatically be nearby in the tree. <br /> - Rather than indexing each, why not cross-index the cards themselves (if they happen to be far away from each other) so that the link to Number Line (Subtraction) appears on Number Line (Addition) and vice-versa? As long as you can find one, you'll be able to find them all, if necessary.

If you look at Luhmann's online example index, you'll see that each index term only has one or two cross references, in part because future/new ideas close to the first one will naturally be installed close to the first instance. You won't find thousands of index entries in his system for things like "sociology" or "systems theory" because there would be so many that the index term would be useless. Instead, over time, he built huge blocks of cards on these topics and was thus able to focus more on the narrow/niche topics, which is usually where you're going to be doing most of your direct (and interesting) work.

Your case sounds, and I see it with many, is that your thinking process is going from the bottom up, but that you're attempting to wedge it into a top down process and create an artificial hierarchy based on it. Resist this urge. Approaching things after-the-fact, we might place information theory as a sub-category of mathematics with overlaps in physics, engineering, computer science, and even the humanities in areas like sociology, psychology, and anthropology, but where you put your work on it may depend on your approach. If you're a physicist, you'll center it within your physics work and then branch out from there. You'd then have some of the psychology related parts of information theory and communications branching off of your physics work, but who cares if it's there and not in a dramatically separate section with the top level labeled humanities? It's all interdisciplinary anyway, so don't worry and place things closest in your system to where you think they fit for you and your work. If you had five different people studying information theory who were respectively a physicist, a mathematician, a computer scientist, an engineer, and an anthropologist, they could ostensibly have all the same material on their cards, but the branching structures and locations of them all would be dramatically different and unique, if nothing else based on the time ordered way in which they came across all the distinct pieces. This is fine. You're building this for yourself, not for a mass public that will be using the Dewey Decimal System to track it all down—researchers and librarians can do that on behalf of your estate. (Of course, if you're a musician, it bears noting that you'd be totally fine building your information theory section within the area of "bands" as a subsection on "The Bandwagon". 😁)

If you overthink things and attempt to keep them too separate in their own prefigured categorical bins, you might, for example, have "chocolate" filed historically under the Olmec and might have "peanut butter" filed with Marcellus Gilmore Edson under chemistry or pharmacy. If you're a professional pastry chef this could be devastating as it will be much harder for the true "foodie" in your zettelkasten to creatively and more serendipitously link the two together to make peanut butter cups, something which may have otherwise fallen out much more quickly and easily if you'd taken a multi-disciplinary (bottom up) and certainly more natural approach to begin with. (Apologies for the length and potential overreach on your context here, but my two line response expanded because of other lines of thought I've been working on, and it was just easier for me to continue on writing while I had the "muse". Rather than edit it back down, I'll leave it as it may be of potential use to others coming with no context at all. In other words, consider most of this response a selfish one for me and my own slip box than as responsive to the OP.)

https://thevoroscope.com/2022/06/27/sum-total-human-knowledge-4/

https://udcc.org/index.php/site/page?view=subject_coverage

Subject coverage of the UDC.

https://en.wikipedia.org/wiki/Universal_Decimal_Classification

Morens, D. M., Taubenberger, J. K., & Fauci, A. S. (2021). Universal Coronavirus Vaccines—An Urgent Need. New England Journal of Medicine, 0(0), null. https://doi.org/10.1056/NEJMp2118468

Ball, P. (2022, February 26). Will we get a single, variant-proof vaccine for Covid? The Observer. https://www.theguardian.com/society/2022/feb/26/will-we-get-a-single-variant-proof-vaccine-for-covid

Historical Hypermedia: An Alternative History of the Semantic Web and Web 2.0 and Implications for e-Research. .mp3. Berkeley School of Information Regents’ Lecture. UC Berkeley School of Information, 2010. https://archive.org/details/podcast_uc-berkeley-school-informat_historical-hypermedia-an-alte_1000088371512. archive.org.

https://www.ischool.berkeley.edu/events/2010/historical-hypermedia-alternative-history-semantic-web-and-web-20-and-implications-e.

https://www.ischool.berkeley.edu/sites/default/files/audio/2010-10-20-vandenheuvel_0.mp3

Interface as Thing - book on Paul Otlet (not released, though he said he was working on it)

• W. Boyd Rayward 1994 expert on Otlet
• Otlet on annotation, visualization, of text
• TBL married internet and hypertext (ideas have sex)
• V. Bush As We May Think - crosslinks between microfilms, not in a computer context
• Ted Nelson 1965, hypermedia

t=540

• Michael Buckland book about machine developed by Emanuel Goldberg antecedent to memex
• Emanuel Goldberg and His Knowledge Machine: Information, Invention, and Political Forces (New Directions in Information Management) by Michael Buckland (Libraries Unlimited, (March 31, 2006)
• Otlet and Goldsmith were precursors as well

four figures in his research: - Patrick Gattis - biologist, architect, diagrams of knowledge, metaphorical use of architecture; classification - Paul Otlet, Brussels born - Wilhelm Ostwalt - nobel prize in chemistry - Otto Neurath, philosophher, designer of isotype

Paul Otlet

• wrote bibliography on law
• book: Something on Bibliography #wanttoread
• universal decimal classification system
• mundaneum
• Le Corbusier - architect worked with Otlet for building for Mundaneum; See: https://socks-studio.com/2019/05/05/the-shape-of-knowledge-the-mundaneum-by-paul-otlet-and-henri-la-fontaine/

Otlet was interested in both the physical as well as the intangible aspects of the Mundaneum including as an idea, an institution, method, body of work, building, and as a network.<br /> (#t=1020)

Early iPhone diagram?!?

(roughly) armchair to do the things in the web of life (Nelson quote) (get full quote and source for use) (circa 19:30)

compares Otlet to TBL

Michael Buckland 1991 <s>internet of things</s> coinage - did I hear this correctly? https://en.wikipedia.org/wiki/Internet_of_things lists different coinages

Turns out it was "information as thing"<br /> See: https://hypothes.is/a/kXIjaBaOEe2MEi8Fav6QsA

sugane brierre and otlet<br /> "everything can be in a document"<br /> importance of evidence

The idea of evidence implies a passiveness. For evidence to be useful then, one has to actively do something with it, use it for comparison or analysis with other facts, knowledge, or evidence for it to become useful.

transformation of sound into writing<br /> movement of pieces at will to create a new combination of facts - combinatorial creativity idea here. (circa 27:30 and again at 29:00)<br /> not just efficiency but improvement and purification of humanity

put things on system cards and put them into new orders<br /> breaking things down into smaller pieces, whether books or index cards....

Otlet doesn't use the word interfaces, but makes these with language and annotations that existed at the time. (32:00)

Otlet created diagrams and images to expand his ideas

Otlet used octagonal index cards to create extra edges to connect them together by topic. This created more complex trees of knowledge beyond the four sides of standard index cards. (diagram referenced, but not contained in the lecture)

Otlet is interested in the "materialization of knowledge": how to transfer idea into an object. (How does this related to mnemonic devices for daily use? How does it relate to broader material culture?)

Otlet inspired by work of Herbert Spencer

space an time are forms of thought, I hold myself that they are forms of things. (get full quote and source) from spencer influence of Plato's forms here?

Otlet visualization of information (38:20)

S. R. Ranganathan may have had these ideas about visualization too

atomization of knowledge; atomist approach 19th century examples:S. R. Ranganathan, Wilson, Otlet, Richardson, (atomic notes are NOT new either...) (39:40)

Otlet creates interfaces to the world - time with cyclic representation - space - moving cube along time and space axes as well as levels of detail - comparison to Ted Nelson and zoomable screens even though Ted Nelson didn't have screens, but simulated them in paper - globes

Katie Berner - semantic web; claims that reporting a scholarly result won't be a paper, but a nugget of information that links to other portions of the network of knowledge.<br /> (so not just one's own system, but the global commons system)

Mention of Open Annotation (Consortium) Collaboration:<br /> - Jane Hunter, University of Australia Brisbane & Queensland<br /> - Tim Cole, University of Urbana Champaign<br /> - Herbert Van de Sompel, Los Alamos National Laboratory annotations of various media<br /> see:<br /> - https://www.researchgate.net/publication/311366469_The_Open_Annotation_Collaboration_A_Data_Model_to_Support_Sharing_and_Interoperability_of_Scholarly_Annotations - http://www.openannotation.org/spec/core/20130205/index.html - http://www.openannotation.org/PhaseIII_Team.html

trust must be put into the system for it to work

coloration of the provenance of links goes back to Otlet (~52:00)

Creativity is the friction of the attention space at the moments when the structural blocks are grinding against one another the hardest. —Randall Collins (1998) The sociology of philosophers. Cambridge, MA: Harvard University Press (p.76)

The Outline of Knowledge appears in the Propædia volume of the Encyclopedia Britannica. It is similar to various olther classification systems like the Dewey Decimal system or the Universal Decimal Classification.

!- claim : examples of a good enough world * Universal Basic Income (UBI) * Blockchain * Offer network

!- in other words : enoughness * Universal Basic Income (UBI)

https://niklas-luhmann-archiv.de/bestand/zettelkasten/zettel/ZK_2_SW1_001_V

One may notice that Niklas Luhmann's index within his zettelkasten is fantastically sparce. By this we might look at the index entry for "system" which links to only one card. For someone who spent a large portion of his life researching systems theory, this may seem fantastically bizarre.

However, it's not as as odd as one may think given the structure of his particular zettelkasten. The single reference gives an initial foothold into his slip box where shuffling through cards beyond that idea will reveal a number of cards closely related to the topic which subsequently follow it. Regular use and work with the system would have allowed Luhmann better memory with respect to its contents and the searching through threads of thought would have potentially sparked new ideas and threads. Thus he didn't need to spend the time and effort to highly index each individual card, he just needed a starting place and could follow the links from there. This tends to minimize the indexing work he needed to do regularly, but simultaneously makes it harder for the modern person who may wish to read or consult those notes.

Some of the difference here is the idea of top-down versus bottom-up construction. While thousands of his cards may have been tagged as "systems" or "systems theory", over time and with increased scale they would have become nearly useless as a construct. Instead, one may consider increasing levels of sub-topics, but these too may be generally useless with respect to (manual) search, so the better option is to only look at the smallest level of link (and/or their titles) which is only likely to link to 3-4 other locations outside of the card just before it. This greater specificity scales better over time on the part of the individual user who is broadly familiar with the system.

Alternatively, for those in shared digital spaces who may maintain public facing (potentially shared) notes (zettelkasten), such sparse indices may not be as functional for the readers of such notes. New readers entering such material generally without context, will feel lost or befuddled that they may need to read hundreds of cards to find and explore the sorts of ideas they're actively looking for. In these cases, more extensive indices, digital search, and improved user interfaces may be required to help new readers find their way into the corpus of another's notes.

Another related idea to that of digital, public, shared notes, is shared taxonomies. What sorts of word or words would one want to search for broadly to find the appropriate places? Certainly widely used systems like the Dewey Decimal System or the Universal Decimal Classification may be helpful for broadly crosslinking across systems, but this will take an additional level of work on the individual publishers.

Is or isn't it worthwhile to do this in practice? Is this make-work? Perhaps not in analog spaces, but what about the affordances in digital spaces which are generally more easily searched as a corpus.

As an experiment, attempt to explore Luhmann's Zettelkasten via an entryway into the index. Compare and contrast this with Andy Matuschak's notes which have some clever cross linking UI at the bottoms of the notes, but which are missing simple search functionality and have no tagging/indexing at all. Similarly look at W. Ross Ashby's system (both analog and digitized) and explore the different affordances of these two which are separately designed structures---the analog by Ashby himself, but the digital one by an institution after his death.

https://udcsummary.info/php/index.php?lang=en

Interesting defined vocabulary and concatenation/auxiliary signs for putting ideas into proximity.

Could be useful for note taking. Probably much harder to get people to adopt this sort of thing with shared notes/note taking however.

Somewhat similar to the Dewey Decimal classification system.

Noam Chomsky felt that there was a tendency for people to confuse the ideas of deep structure with the ideas of either generative grammar or universal grammar. He also thought that professional linguists confused what he called "the creative aspect of language use" with the recursive property of generative grammars.

Lois Weber<br /> - First woman accepted to Motion Picture Director's Association, precursor of Director's Guild<br /> - First directors committee of the Academy of Motion Picture Arts and Sciences<br /> - Mayor of Universal City<br /> - One of the highest paid and most influential directors in Hollywood of her day<br /> - one of first directors to form her own production company

See also: - https://en.wikipedia.org/wiki/Lois_Weber

Where are My Children?, Universal's top film of 1916, written and directed by their top director Lois Weber, discussed abortion and birth control. It was added to the National Film Registry in 1993.

See also - Stamp, Shelley. Lois Weber in Early Hollywood. University of California Press, May 2015. ISBN 9780520284463

Watched this last night

https://www.kcet.org/shows/lost-la/episodes/dream-factory

https://udlguidelines.cast.org/

https://www.facultyfocus.com/articles/effective-teaching-strategies/bringing-theories-to-practice-universal-design-principles-and-the-use-of-social-annotation-to-support-neurodivergent-students/

A very brief primer on UDL and how Hypothes.is and social annotation might fit within its framework. There seems to be a stronger familiarity with Hypothes.is as a tool and a bit less familiarity with UDL, or perhaps they just didn't bind the two together as tightly as they might have.

I'm definitely curious to look more closely at the UDL framework to see what we might extract from it.

The title features neurodiversity, but doesn't deliver on the promise.

An interesting reframing would be that of social annotation with the idea of modality shifts, particularly for neurodiverse students.

Universal Design for Learning framework https://udlguidelines.cast.org/

http://expositions.mundaneum.org/fr/mundaneum-petite-histoire-dune-grande-idee

Universal Bibliographical Directory (RBU)

This description of "teach[ing] to all the [learning] styles" seems similar to some descriptions of Universal Design for Learning that I have seen.

Liu, C., Yang, Y., Chen, B., Cui, T., Shang, F., & Li, R. (2022). Revealing spatio-temporal interaction patterns behind complex cities. ArXiv:2201.02117 [Physics]. http://arxiv.org/abs/2201.02117

The exact same could be said of the early web which hasn't been evenly archived or easily searchable, so responses to early blog articles may not be easily found amidst a mountain of noise.

Current practice in UK on UDL- updated references and useful publication linked to HEA accreditation

Scott, Jake, Aaron Richterman, and Muge Cevik. ‘Covid-19 Vaccination: Evidence of Waning Immunity Is Overstated’. BMJ 374 (23 September 2021): n2320. https://doi.org/10.1136/bmj.n2320.

will track mounts and fin boxes work together? Do they share standards?

Skimmed opening paragraphs in physical newspaper. Want to revisit. This sounds like the sort of "pulling oneself up by one's bootstraps" that actually works.

Walker, P., Davis, N., & Grover, N. (2021, September 3). UK vaccines watchdog fails to back Covid jabs for children. The Guardian. http://www.theguardian.com/society/2021/sep/03/uk-rules-out-covid-vaccinations-for-children

Nandi, A., Kumar, S., Shet, A., Bloom, D. E., & Laxminarayan, R. (2020). Childhood vaccinations and adult schooling attainment: Long-term evidence from India’s Universal Immunization Programme. Social Science & Medicine (1982), 250, 112885. https://doi.org/10.1016/j.socscimed.2020.112885

This may be well worth reading with respect to my research on memory, stenography, shorthand, etc.

Interesting that this links the idea of universal languages to his mathematical notation and NOT to the idea of translating numbers into words using and early form of the major system.

Kim, M. J., & Lee, S. (2020). Can Stimulus Checks Boost an Economy under COVID-19? Evidence from South Korea. IZA Discussion Paper, 13567.

Evaluates CLUE, Mastering-SP, and POGIL curricula on universal design for learning checkpoints for making materials accessible for students with disabilities Guidelines for universal design for learning valuable for course design

editor, P. B. S. policy. (2020, December 9). Covid-driven recession likely to push 2m UK families into poverty. The Guardian. https://www.theguardian.com/society/2020/dec/09/covid-driven-recession-likely-to-push-2m-uk-families-into-poverty

Adult Learning often takes place within walls or in front of a computer screen this can lead to health problems. This article offers reasons and methods for getting adults outdoors and using Universal Design. Outdoor learning can be used to complement digital learning.

How many times do we use "accommodations" which dance around the relational issues, instead of dealing directly with them?

Good article about the importance of Universal Design when designing learning opportunities. The authors use plenty of strong sources to back their findings and keep the information concise.

9/10

IZA – Institute of Labor Economics. ‘COVID-19 and the Labor Market’. Accessed 6 October 2020. https://covid-19.iza.org/publications/dp13742/.