9.43.1 Top new questions this week

9.43.1.1 How to properly align two numbered equations?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=689686

I try to type two following equations: 
These equations are not subequations. First number 1 in (1.1) and (1.2) means chapter. My problem is that each part of these equations is centering. I can't ... 
[horizontal-alignment] [amsmath] [arrays] [alignat]
 

asked by Sindzicat https://tex.stackexchange.com/landing/r/digest?cta=user&id=299746 Score of 10

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 11

9.43.1.2 Understanding boxes at the primitive level

https://tex.stackexchange.com/landing/r/digest?cta=question&id=689574

I'm learning plain TeX as a nerdy hobby. My current project involves trying to divide the page into unequal columns. I only want to use boxes and glue, with no external dependencies, e.g. eplain. ... 
[tex-core] [boxes]
 

asked by Jordan Dennis https://tex.stackexchange.com/landing/r/digest?cta=user&id=295127 Score of 10

answered by wipet https://tex.stackexchange.com/landing/r/digest?cta=user&id=51799 Score of 10

9.43.1.3 Any difference between \binom vs \choose?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=689660

Any reason to prefer one over the other? Or are they exactly the same? 
[math-mode]
 

asked by user24096 https://tex.stackexchange.com/landing/r/digest?cta=user&id=255783 Score of 8

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 17

9.43.1.4 Left specification for integral

https://tex.stackexchange.com/landing/r/digest?cta=question&id=689533

I am trying to reproduce the following formula, where an integral has a 'specification' assigned, placed on its bottom left; any idea on the proper/best way to do so? 
[integral]
 

asked by Rpy https://tex.stackexchange.com/landing/r/digest?cta=user&id=165613 Score of 7

answered by Sandy G https://tex.stackexchange.com/landing/r/digest?cta=user&id=125871 Score of 6

9.43.1.5 Missing number error for using Spy in LuaLaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=689516

I have a diagram involving lens and beams made using pst-optexp package for convenience and accuracy. So I had to use LuaLaTeX for compilation. However I would like to use the spy library from tikz ... 
[tikz-pgf] [luatex] [pstricks]
 

asked by SolidMark https://tex.stackexchange.com/landing/r/digest?cta=user&id=242742 Score of 6

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 5

9.43.1.6 Is it possible to fill the second column with something automatically?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=689309

Is it possible to reach a result like the following without manually repeating \hrulefill? 
In the actual document, there is no \hrulefill but a TikZ grid. 
\documentclass{book} 
\usepackage{geometry} 
\... 
[multicol] [fill]
 

asked by CarLaTeX https://tex.stackexchange.com/landing/r/digest?cta=user&id=101651 Score of 6

answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 Score of 10

9.43.1.7 Is it possible to fill the second column with a grid automatically?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=689855

This is a follow-up of Is it possible to fill the second column with something automatically? 
I would like to (automatically) reach the following result (fill in the second column with a grid): 
\... 
[tikz-pgf] [tcolorbox] [multicol]
 

asked by CarLaTeX https://tex.stackexchange.com/landing/r/digest?cta=user&id=101651 Score of 5

answered by Ignasi https://tex.stackexchange.com/landing/r/digest?cta=user&id=1952 Score of 4