10.64.1 Top new questions this week

10.64.1.1 Help with unidentified character denoting temperature, 19th century thermodynamics

https://tex.stackexchange.com/landing/r/digest?cta=question&id=727386

This may not be the appropriate place to ask such a question, so moderators should feel free to delete. 
I am reproducing a text on thermodynamics from the 19th century; one character used to indicate ... 
[symbols]
 

asked by Rpy https://tex.stackexchange.com/landing/r/digest?cta=user&id=165613 Score of 8

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 12

10.64.1.2 Papersize - why does TeX add margins by default and how can I avoid them?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=727549

After reading the answers, the best hint is:"The classical TeX does not know the paper dimensions". 
Why does TeX add margins left and top of the page and how can I avoid them? 
TeX, not LaTeX!... 
[tex-core]
 

asked by MBE https://tex.stackexchange.com/landing/r/digest?cta=user&id=284656 Score of 7

answered by cfr https://tex.stackexchange.com/landing/r/digest?cta=user&id=39222 Score of 22

10.64.1.3 How do I examine an integer in a text

https://tex.stackexchange.com/landing/r/digest?cta=question&id=727606

I found some code on from this link How to split text into characters 
But \IfInteger function not work 
\documentclass{article} 
\usepackage{coolstr} 
\usepackage{xstring} 
\begin{document} 
\... 
[strings]
 

asked by XCN https://tex.stackexchange.com/landing/r/digest?cta=user&id=343342 Score of 7

answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 Score of 7

10.64.1.4 How to format units inside math environment?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=727366

I want to answer the following question: 
Which of these options would be an acceptable way of writing A = 12 cm^2 in LaTeX? Select all that apply. 
$A = 12\text{ cm}^2$ 
\(A = 12 cm^2\) 
\(A = \mathrm{... 
[math-mode]
 

asked by Sarzamine Danesh https://tex.stackexchange.com/landing/r/digest?cta=user&id=342621 Score of 7

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 17

10.64.1.5 How to exit loop when encounter first integer in string

https://tex.stackexchange.com/landing/r/digest?cta=question&id=727675

This is some code. 
\documentclass{article} 
\usepackagei"\275\233xstring} 
\begin{document} 
\def\xloop#1{% 
\ifx\relax#1 
\else 
**\IFInteger{#1}{first integer is here.}** % need to be modified 
... 
[strings]
 

asked by XCN https://tex.stackexchange.com/landing/r/digest?cta=user&id=343342 Score of 6

answered by Steven B. Segletes https://tex.stackexchange.com/landing/r/digest?cta=user&id=25858 Score of 6

10.64.1.6 Writing dental notations

https://tex.stackexchange.com/landing/r/digest?cta=question&id=727351

I am trying to include dental notations in a document. 
I would like the notations to look like this. 
This is what I could do so far. 
\documentclass{article} 
\begin{document} 
hello$\lceil 5$ ~~~~~~~... 
[tikz-pgf]
 

asked by Hany https://tex.stackexchange.com/landing/r/digest?cta=user&id=93617 Score of 6

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 Score of 10

10.64.1.7 Tikz: On straight lines moving balls on a circle inside a regular polygon

https://tex.stackexchange.com/landing/r/digest?cta=question&id=727315

I want to draw  something like this 
with n/2 balls in a regular n-polygon. 
At the intersections with of the small circle inside C with the diagonals D 
% Problem here %%%%%%%%%%%%%%%%%% 
\path[name ... 
[tikz-pgf]
 

asked by cis https://tex.stackexchange.com/landing/r/digest?cta=user&id=46023 Score of 6

answered by Qrrbrbirlbel https://tex.stackexchange.com/landing/r/digest?cta=user&id=16595 Score of 9