7.72.1 Top new questions this week

7.72.1.1 What is a TikZ path?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=622131

The TikZ manual says 
The basic building block of all pictures in TikZ is the path. A path 
is a series of straight lines and curves that are connected (that is 
not the whole picture, but let us ignore ... 
[tikz-pgf]
 

asked by Mad Hatter https://tex.stackexchange.com/landing/r/digest?cta=user&id=24864 16 votes

answered by David Purton https://tex.stackexchange.com/landing/r/digest?cta=user&id=87678 18 votes

7.72.1.2 TikZ single intersection between curve and horizontal line not found

https://tex.stackexchange.com/landing/r/digest?cta=question&id=622315

What happened 
The error 
! Package pgf Error: No shape named `intersection-1' is known. 
is produced when compiling the following with pdfLaTeX: 
\documentclass{standalone} 
\usepackage{tikz} 
\... 
[tikz-pgf] [pdftex] [intersections]
 

asked by Miriam Briskman https://tex.stackexchange.com/landing/r/digest?cta=user&id=256551 9 votes

answered by ABC https://tex.stackexchange.com/landing/r/digest?cta=user&id=255043 6 votes

7.72.1.3 Upper-half of colon

https://tex.stackexchange.com/landing/r/digest?cta=question&id=622639

I am writing notes on finite group theory, and the notation used in the field uses: 
$A.B$ for an unspecified group extension involving groups A and B 
$A:B$ for the semidirect product with normal ... 
[math-mode] [symbols]
 

asked by Alex Nelson https://tex.stackexchange.com/landing/r/digest?cta=user&id=14751 8 votes

answered by campa https://tex.stackexchange.com/landing/r/digest?cta=user&id=82917 8 votes

7.72.1.4 Test if an argument starts with a particular string

https://tex.stackexchange.com/landing/r/digest?cta=question&id=622046

Is there a way in tex to test if an argument starts with some string or not? 
And then extract the text that follows that start? 
As an example, I want to define a command that makes a text bold if it ... 
[macros] [conditionals] [strings]
 

asked by Tohiko https://tex.stackexchange.com/landing/r/digest?cta=user&id=93163 8 votes

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

7.72.1.5 How to Automatically Align the First Letter of a Name with the First Letter of the Person's Title Beneath

https://tex.stackexchange.com/landing/r/digest?cta=question&id=622001

Consider 
\documentclass{letter} 
\begin{document} 
\thispagestyle{empty} 
\begin{flushleft} 
December 20, 1883 
\end{flushleft} 
\begin{flushright} 
James Joseph Sylvester \\ 
Savilian Chair of Geometry, ... 
[horizontal-alignment]
 

asked by Samuel Bowditch https://tex.stackexchange.com/landing/r/digest?cta=user&id=225746 8 votes

answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 8 votes

7.72.1.6 How can I put a grid/squared paper behind a single formula?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=622542

Sadly I didn't found any source showing this. I just need a grid behind some math. Usually I box equations using: 
\documentclass[preview]{standalone} 
\usepackage[most]{tcolorbox} 
\begin{document} 
\... 
[tcolorbox] [box] [grids]
 

asked by Leon https://tex.stackexchange.com/landing/r/digest?cta=user&id=216987 7 votes

answered by mais https://tex.stackexchange.com/landing/r/digest?cta=user&id=254551 7 votes

7.72.1.7 Rounded corners, dotted lines and shadow inline but without TikZ

https://tex.stackexchange.com/landing/r/digest?cta=question&id=622037

I'm trying to draw rounded rectangles with solid or dotted lines and a shadow around arbitrary text in LaTeX. I was hopeful that my answer was in How to draw rounded corners around box with shadow, ... 
[tikz-pgf] [inline] [rounded-corners]
 

asked by user3486184 https://tex.stackexchange.com/landing/r/digest?cta=user&id=108148 7 votes

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