https://imaginarytext.ca/posts/2023/OnTypst/

via John Maxwell https://hcommons.social/@jmaxsfu/111496741446813321

https://ar5iv.org/

Someone is cleverly converting arXiv pages into responsive HTML5.

View any arXiv article URL by changing the X to a 5

Tex command for the standard deviation of the sample mean

$$\begin{align*} a_{11}x_1+a_{12}x_2+a_{13}x_3+\dots+a_{1n}x_n&=b_1\\ a_{21}x_1+a_{22}x_2+a_{23}x_3+\dots+a_{2n}x_n&=b_2\\ a_{31}x_1+a_{32}x_2+a_{33}x_3+\dots+a_{3n}x_n&=b_3\\ &\vdots\\ a_{m1}x_1+a_{m2}x_2+a_{m3}x_3+\dots+a_{mn}x_n&=b_m \end{align*}$$