7.19.1 Top new questions this week

7.19.1.1 Fragile commands in 2021

https://tex.stackexchange.com/landing/r/digest?cta=question&id=588674

Since 2015, \( \), \begin{math} etc. have been made robust. Aside from user-generated commands not created with \DeclareRobustCommand and out-of-date packages, are fragile commands still a thing in ... 
[macros] [fragile]
 

asked by Don Hosek https://tex.stackexchange.com/landing/r/digest?cta=user&id=202780 22 votes

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 14 votes

7.19.1.2 tikz: Applying rounded corners to arcs

https://tex.stackexchange.com/landing/r/digest?cta=question&id=588089

It seems that the option rounded corners (especially with larger radii) and arcs in TikZ do not always go well together. In general, the exact same path with rounded corners applied does not exactly ... 
[tikz-pgf] [arc] [rounded-corners]
 

asked by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 12 votes

answered by Sandy G https://tex.stackexchange.com/landing/r/digest?cta=user&id=125871 11 votes

7.19.1.3 Why doesn't LaTeX implement single pass references?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=588147

Example: 
\documentclass{article} 
\begin{document} 
\section{Power series}\label{ps} 
\begin{equation} \label{eq} 
\sum_{i=0}^\infty a_i x^i. 
\end{equation} 
The equation \ref{eq} is a typical power ... 
[cross-referencing] [optex]
 

asked by User https://tex.stackexchange.com/landing/r/digest?cta=user&id=43121 12 votes

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 26 votes

7.19.1.4 Alignment for nested matrices

https://tex.stackexchange.com/landing/r/digest?cta=question&id=588546

I want to get a matrix of arrays, and I cannot make it aligned. I tried blkarray and bmatrix, but none of them works for me. Could somebody help me out? 
Code below is what I wrote: 
a = \left[ 
\begin{... 
[equations] [matrices]
 

asked by ao\220\225ao\222\214c,\221\276 https://tex.stackexchange.com/landing/r/digest?cta=user&id=238137 9 votes

answered by Zarko https://tex.stackexchange.com/landing/r/digest?cta=user&id=18189 12 votes

7.19.1.5 Symbol of Dot inside a circle

https://tex.stackexchange.com/landing/r/digest?cta=question&id=587983

I am looking for this symbol which I haven't found online (especially with a large dot inside the circle) 
. 
[amsmath] [math-operators] [logic]
 

asked by BrianTag https://tex.stackexchange.com/landing/r/digest?cta=user&id=237842 8 votes

answered by Vincent https://tex.stackexchange.com/landing/r/digest?cta=user&id=201628 8 votes

7.19.1.6 How do I change the page number size after a certain page number?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=588339

I use LaTeX to typeset my notes. At the beginning of each document, I have the following code which makes a duck at the bottom of the page holding a sign with the page number on it: 
\documentclass[... 
[header-footer] [fontsize]
 

asked by Austin Shiner https://tex.stackexchange.com/landing/r/digest?cta=user&id=238037 7 votes

answered by Ulrike Fischer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2388 9 votes

7.19.1.7 tikz generate 50x50 pixels png file

https://tex.stackexchange.com/landing/r/digest?cta=question&id=587997

I need to generate 50x50 png icons, I do it as following: 
Create a tikz file with a radius 25 circle. 
\documentclass[border=0pt]{standalone} 
\usepackage{tikz} 
\begin{document} 
\begin{tikzpicture} 
... 
[tikz-pgf]
 

asked by lucky1928 https://tex.stackexchange.com/landing/r/digest?cta=user&id=70324 7 votes

answered by Jasper Habicht https://tex.stackexchange.com/landing/r/digest?cta=user&id=47927 6 votes