6.12.1 Top new questions this week

6.12.1.1 Give me my fancy math eth\235\222\263 from mathptmx back!

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536297

In the old times of mathptmx, we wrote stuff such as 
\documentclass{article} 
\pagestyle{empty} 
\usepackage{mathptmx} 
\begin{document} 
Let \(\mathcal{X}=\{X_1,\ldots,X_n\}\). 
\end{document} 
and got  ... 
[math-fonts] [newtxmath] [calligraphy] [mathptmx]
 

asked by Just_A_Man https://tex.stackexchange.com/landing/r/digest?cta=user&id=211446 17 votes

answered by Sebastiano https://tex.stackexchange.com/landing/r/digest?cta=user&id=117876 12 votes

6.12.1.2 The universe of Mechanics: animated mathematical formulas

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536376

Many years ago when I saw these videos I has been fascinated by how the formulas were transformed and/or modified. See, for example this video of youtube (Kinetic and Potential Energy) from the minute  ... 
[animations] [animate] [computer-modern]
 

asked by Sebastiano https://tex.stackexchange.com/landing/r/digest?cta=user&id=117876 15 votes

answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 20 votes

6.12.1.3 How to test if the product of two numbers are positive as well as finding their absolute values?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536558

I am trying to simplify my work with some latex coding, where the intention is to generate two types of diagrams based on the input. The first type is diagrams with lines only going up 
and the  ... 
[tikz-pgf] [macros] [ifthenelse]
                                                                                  

                                                                                  
 

asked by water liu https://tex.stackexchange.com/landing/r/digest?cta=user&id=178123 8 votes

answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 9 votes

6.12.1.4 Write Urdu with LuaTex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536416

I figured out how to write with Arabic fonts 
\documentclass[a4paper,11pt]{article} 
\usepackage{arabluatex} % for support of arabic fonts 
\newfontfamily\arabicfont{Amiri}[Script=Arabic,  ... 
[arabic]
 

asked by LeO https://tex.stackexchange.com/landing/r/digest?cta=user&id=48642 8 votes

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

6.12.1.5 Annotating a binary relation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=537083

I wish to add tilde or hat notation to a binary relation I have created, but the notation will not centre correctly. For example, if I write the following 
$\hat{\mathrel{\mathcal R}}$ 
then the hat  ... 
[math-mode] [relation-symbols]
 

asked by user1211719 https://tex.stackexchange.com/landing/r/digest?cta=user&id=43695 6 votes

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

6.12.1.6 Lua Latex: How to break a long line of elements of a set in inline mode?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=537039

I have a long listing of 2-uple elements like $A = \{ (1,2), (1,3), (1,5), (2,1), (2,2), (2,3), (1,2), (1,3), (1,5), (2,1), (2,2), (2,3),(1,2), (1,3), (1,5), (2,1), (2,2), (2,3),(1,2), (1,3), (1,5),  ... 
[math-mode] [luatex] [line-breaking] [inline]
 

asked by Lin https://tex.stackexchange.com/landing/r/digest?cta=user&id=164318 6 votes

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 4 votes

6.12.1.7 thmtools - Theorem does not change the title when I change the command that defines it

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536865

Here is the example of a code: 
\documentclass[11pt, a4paper]{article} 
\usepackage[utf8]{inputenc} 
\usepackage{amsthm} 
\usepackage{thmtools} 
\newcommand\testTitle{Theorem} 
\declaretheorem[title =  ... 
[amsthm] [thmtools]
 

asked by Zeus DM https://tex.stackexchange.com/landing/r/digest?cta=user&id=182773 6 votes

answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 5 votes