6.56.1 Top new questions this week

6.56.1.1 Why is there a space between the left parenthesis and the radical sign?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=565505

Minimal working example: 
\documentclass{article} 
\begin{document} 
Default spacing: \((\sqrt 2)\) 
Negative space after the left parenthesis: \((\!\sqrt 2)\) 
\end{document} 
To me, the default spacing ... 
[math-mode] [spacing] [sqrt]
 

asked by tlou https://tex.stackexchange.com/landing/r/digest?cta=user&id=226071 11 votes

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 19 votes

6.56.1.2 How to align numbers in a matrix by decimal point?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=565570

Here is a matrix: 
\documentclass{article} 
\usepackage{amsmath} 
\begin{document} 
\begin{equation*} 
\begin{pmatrix} 
1.41 & -1.73\\ 
2.718 & 3.14 
\end{pmatrix} 
\end{equation*} 
\end{... 
[horizontal-alignment] [matrices]
 

asked by mbork https://tex.stackexchange.com/landing/r/digest?cta=user&id=5626 7 votes

answered by Zarko https://tex.stackexchange.com/landing/r/digest?cta=user&id=18189 6 votes

6.56.1.3 What's a reliable way to detect math mode (including align*)?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=565411

I thought \ifmmode detected math mode, but clearly it does not: 
\documentclass{article} 
\usepackage{amsmath} 
\begin{document} 
\[ 
\ifmmode math \else not math \fi 
\] 
$\ifmmode math \else not math \... 
[math-mode] [amsmath] [conditionals]
 

asked by Jason Gross https://tex.stackexchange.com/landing/r/digest?cta=user&id=2066 7 votes

answered by Phelype Oleinik https://tex.stackexchange.com/landing/r/digest?cta=user&id=134574 8 votes

6.56.1.4 questions about TeX expansion

https://tex.stackexchange.com/landing/r/digest?cta=question&id=565032

See the examples below: 
\documentclass{article} 
\begin{document} 
\def\a{1} 
\def\b{\def\a{2}} 
\def\c{\b} 
\c\a 
\end{document} 
In expansion stage, \def, its parameter text and replacement text is not ... 
[expansion]
 

asked by ZhiyuanLck https://tex.stackexchange.com/landing/r/digest?cta=user&id=201158 7 votes

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 9 votes

6.56.1.5 Fill the intersection of 3 (or more) curves

https://tex.stackexchange.com/landing/r/digest?cta=question&id=564973

I couldn't find a simple way to fill the area of the intersections of 3 curves. I want to fill this area: 
My try: 
\documentclass{article} 
\usepackage{pgfplots} 
\pgfplotsset{compat=newest} 
\... 
[tikz-pgf] [pgfplots] [fillbetween]
 

asked by Iborra https://tex.stackexchange.com/landing/r/digest?cta=user&id=222098 6 votes

answered by muzimuzhi Z https://tex.stackexchange.com/landing/r/digest?cta=user&id=79060 4 votes

6.56.1.6 How to align, enlarge and center the following contents?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=565332

I want to 
align 2 and 4 with the red lines on their right. 
vertically enlarge the middle column to provide well balanced space for its contents. 
vertically center the contents in the third column. 
\... 
[tables] [horizontal-alignment] [vertical-alignment] [arrays] [alignment]
 

asked by Not A Zoomed Image https://tex.stackexchange.com/landing/r/digest?cta=user&id=87876 5 votes

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 5 votes

6.56.1.7 How to scale newtxmath fonts to match scaled garamondx

https://tex.stackexchange.com/landing/r/digest?cta=question&id=565344

Here's a MWE: 
\documentclass{article} 
\usepackage[T1]{fontenc} 
\usepackage[scaled=0.5]{garamondx} 
\usepackage[garamondx]{newtxmath} 
% \usepackage[garamondx,scaled=0.5]{newtxmath} % <- doesn't work 
%... 
[fonts] [scaling] [newtxmath] [garamondx]
 

asked by Frunobulax https://tex.stackexchange.com/landing/r/digest?cta=user&id=52582 5 votes