6.11.1 Top new questions this week

6.11.1.1 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 13 votes

answered by Vincent https://tex.stackexchange.com/landing/r/digest?cta=user&id=201628 16 votes

6.11.1.2 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 12 votes

answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 16 votes

6.11.1.3 How to set the space between the \int with its superscript?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536088

MdSymbol is an excellent sans math (just symbol) font macro package 
I think \int with its superscript are too tight, how to set the space between the \int with its superscript? 
here a example,  ... 
[math-mode] [symbols]
 

asked by poorich https://tex.stackexchange.com/landing/r/digest?cta=user&id=65918 8 votes

answered by egreg https://tex.stackexchange.com/landing/r/digest?cta=user&id=4427 8 votes

6.11.1.4 How do I create this semi-enclosed arrow symbol?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=535873

I would like to create a symbol for \implies and \impliedby where they are enclosed in a rotated lidless box as shown in the picture. Can anybody tell me how I could achieve this? 
[symbols] [stacking-symbols]
 

asked by Robert Lee https://tex.stackexchange.com/landing/r/digest?cta=user&id=211201 8 votes

answered by SchrA~\[Paragraph]dinger's cat https://tex.stackexchange.com/landing/r/digest?cta=user&id=194703 8 votes

6.11.1.5 How can I draw angled lines in LaTeX to create ruled template for calligraphy?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=535649

I am trying to create a template for calligraphy writing. I would like it to look something like this picture below, but with no margins nor title (A4 paper). I want to have three types of lines: 
... 
[tikz-pgf] [color] [line-spacing] [coordinates] [tikz-angles]
 

asked by Vladimir https://tex.stackexchange.com/landing/r/digest?cta=user&id=211100 8 votes

answered by frougon https://tex.stackexchange.com/landing/r/digest?cta=user&id=73317 8 votes

6.11.1.6 lower equal with dot

https://tex.stackexchange.com/landing/r/digest?cta=question&id=535958

Is there a way to write the symbol "lower or equal" with a dot directly after it? Just like \lessdot but with the horizontal line added. Would be awesome if someone can tell me. I didn't find it after  ... 
[math-mode] [symbols]
 

asked by Kegorus https://tex.stackexchange.com/landing/r/digest?cta=user&id=211240 7 votes

answered by Steven B. Segletes https://tex.stackexchange.com/landing/r/digest?cta=user&id=25858 12 votes

6.11.1.7 Tagging an equation with a tikz duck

https://tex.stackexchange.com/landing/r/digest?cta=question&id=536092

I would like to label and equation with a tikz duck from the tikzducks package and refer back to it later, like so: 
The obvious solution: 
\usepackage{tikz} 
\usepackage{tikzducks} 
... 
[tikz-pgf] [tikzducks]
 

asked by Damian Lin https://tex.stackexchange.com/landing/r/digest?cta=user&id=211318 7 votes

answered by Ulrike Fischer https://tex.stackexchange.com/landing/r/digest?cta=user&id=2388 16 votes