4.18.1 Top new questions this week

4.18.1.1 LaTeX Theory - How Symbols are Modeled Under the Hood

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432708

This question is about how LaTeX models symbols under the hood. I would like to get an understanding of the language/terminology involved in constructing a complex text expression such as this: 
... 
[symbols] [tex-core] [terminology]
 

asked by Lance Pollard https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=26407 31 votes

answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 42 votes

4.18.1.2 How to apply 3D transform to arrows in TikZ

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432170

Consider this minimal example. How can I get the arrow to 'rotate' like everything else is rotating in the diagram? I have tried using transform shape but this does not apply to the arrows. 
... 
[tikz-pgf]
 

asked by Myles https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=128068 13 votes

answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 13 votes

4.18.1.3 Ugly horizontal spacing with some symbol-subscript/superscript combinations

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432200

Sometimes I find the spacing of my favourite font lmodern ugly. Below is an example, where the subscript of the nabla has to be adjusted to not stick out. Most of the time, these cases are the sub-  ... 
[math-mode] [horizontal-alignment] [symbols]
 

asked by Mankka https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=18816 12 votes

answered by Mico https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=5001 7 votes

4.18.1.4 Italic in section headings with Linux Biolinum

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432737

When compiling this minimal document 
\documentclass[a4paper]{scrartcl} 
\usepackage{fontspec} 
\setromanfont[]{Linux Libertine O} 
\setsansfont[]{Linux Biolinum O} 
\begin{document} 
\section{Test  ... 
[fonts] [xetex]
 

asked by chr https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=95284 11 votes

answered by egreg https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=4427 13 votes

4.18.1.5 How do I draw an LSTM cell in Tikz?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432312

I am a newcomer to Tikz and have been trying to draw an recurrent neural network Long-Short Term Memory (LSTM) cell in Tikz, but have trouble correctly aligning the boxes I need inside the cell. The  ... 
[tikz-pgf]
 

asked by Jakob Drachmann Havtorn https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=63562 11 votes

answered by J Leon V. https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=154390 17 votes

4.18.1.6 TexLive 2018 Installation Error: Missing lz4

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432617

Here is an error message for TexLive 2018 installation for Windows 10. Please advise. 
PATH=C:\Users\A517-51G-54L4\Downloads\install-tl\install-tl-20180520\tlpkg\tlperl\bin;C:\Program Files  ... 
[texlive]
 

asked by user12586 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=33593 9 votes

answered by norbert https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=10829 6 votes

4.18.1.7 Graph of a matrix for a 2D grid using certain discretization scheme

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=432467

I have a 2D grid which will result in a sparse matrix when discretized with 2nd order central difference scheme using finite difference method (5 point stencil). Is there a way to generate a matrix  ... 
[tikz-pgf] [tikz-matrix] [grids]
 

asked by gajendra https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=146036 8 votes

answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 6 votes