5.12.1 Top new questions this week

5.12.1.1 Incomplete cube
5.12.1.2 Is it canonical bit space?
5.12.1.3 Decide between Polyglossia and Babel for LuaLaTeX in 2019
5.12.1.4 Extending anchors in TikZ
5.12.1.5 TikZ: How to fill area with a special pattern?
5.12.1.6 subequations: How to continue numbering within subequation?
5.12.1.7 \numexpr behavior in math mode and/or TikZ
5.12.1.1 Incomplete cube

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=482561

I want to draw an incomplete cube, as in the following figure. 
But, I can only draw a complete cube, see below. 
\documentclass[12pt]{article} 
\usepackage{tikz} 
\usepackage{verbatim} 
... 
[tikz-pgf]
 
asked by Benedito Freire https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=151976 13 votes
answered by JouleV https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=156344 14 votes
5.12.1.2 Is it canonical bit space?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=483128

I have this simple code, 
\documentclass[12pt]{book} 
\usepackage{mathtools} 
\usepackage{newtxtext} 
\usepackage[lite]{mtpro2} 
\begin{document} 
$d\bar{p}$ and $dt$. 
\end{document} 
with this output, 
... 
[math-mode] [macros] [symbols] [mtpro] [newtx]
 
asked by Sebastiano https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=117876 11 votes
answered by Steven B. Segletes https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=25858 10 votes
5.12.1.3 Decide between Polyglossia and Babel for LuaLaTeX in 2019

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=482396

Which are the key questions one has to ask to decide between Polyglossia and Babel for a LuaLaTeX project in 2019? 
There has been a similar, more general question in 2012, but the packages have  ... 
[luatex] [babel] [polyglossia] [incompatibility] [comparison]
 
asked by Jonas Stein https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=16227 10 votes
answered by David Purton https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=87678 12 votes
5.12.1.4 Extending anchors in TikZ

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=482057

The following are the standard anchors available in TikZ (to the best of my knowledge): 
\documentclass{article} 
\usepackage{tikz} 
\usetikzlibrary{positioning} 
\tikzset{dot/.style = { 
shape  =  ... 
[tikz-pgf] [positioning]
 
asked by subham soni https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=41885 10 votes
answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 11 votes
5.12.1.5 TikZ: How to fill area with a special pattern?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=482462

I want to visualize a turbulent flow regime. Assumed we have a simple empty square that should be filled with a pattern. 
Minimum Working Example (MWE): 
\documentclass{standalone} 
\usepackage{tikz} 
... 
[tikz-pgf] [tikz-arrows] [draw] [fill] [pattern]
 
asked by Dave https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=78784 9 votes
answered by marmot https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=121799 6 votes
5.12.1.6 subequations: How to continue numbering within subequation?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=482575

Let's assume we want to create one subequation including four aligned single equations. The first two single equations should be numbered as 1a and 1b while the third and fourth one should continue  ... 
[equations] [numbering] [align] [amsmath] [subequations]
                                                                                  

                                                                                  
 
asked by Dave https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=78784 8 votes
answered by daleif https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=3929 11 votes
5.12.1.7 \numexpr behavior in math mode and/or TikZ

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=483102

I am attempting to create a triangular grid of numbers like shown below: 
This was created in TikZ by hard-coding each point, but I would like to generate the grid procedurally so I can make  ... 
[tikz-pgf] [math-mode] [programming]
 
asked by PGmath https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=115653 7 votes