1.3.1 Top new questions this week

1.3.1.1 Do fontsize environments exist?

http://tex.stackexchange.com/questions/258277/do-fontsize-environments-exist

Without any doubt there are fontsize switches in the form of control sequences (described here for instance.) But, from time to time I ran into code examples where environment versions of those were  ...
 

- asked by Ruben (29 votes), answered by Christian Hupfer (18 votes)

1.3.1.2 is there a way to write -= as one symbol in formulas

http://tex.stackexchange.com/questions/258428/is-there-a-way-to-write-as-one-symbol-in-formulas

In programming -=, += and other similar operators are quite popular. But I am unable to write such operator nicely in Latex equations. 
For example when I use x += \frac{\partial C}{\partial x} I get  ...
 

- asked by Salvador Dali (17 votes), answered by egreg (18 votes)

1.3.1.3 Tikz-diagram: Additional right angle and space

http://tex.stackexchange.com/questions/258325/tikz-diagram-additional-right-angle-and-space

I'm trying to recreate this diagram: 
Mine already looks pretty good but the connection between the Environment and Sensornode lacks the 2nd right angle and space for the measured by text. 
How  ...
 

- asked by Hedge (16 votes), answered by Zarko (13 votes)

1.3.1.4 why lualatex gives erorr "Too many open files" but pdflatex does not on same latex file?

http://tex.stackexchange.com/questions/258127/why-lualatex-gives-erorr-too-many-open-files-but-pdflatex-does-not-on-same-lat

Using TL 2015 on Linux. 
I have a latex file which includes graphics, all in pdf format. All the images are included using the call 
...
 

- asked by Nasser (13 votes), answered by cfr (9 votes)

1.3.1.5 Matrices in latex

http://tex.stackexchange.com/questions/258380/matrices-in-latex

Trying to create a matrix using the below markup: 
\begin{figure} 
\centering 
\[ 
\begin{blockarray}{cccccccc} 
I & like & nlp & mlpr & enjoy & reading & books \\ 
...
 

- asked by Sameer (11 votes), answered by Christian Hupfer (12 votes)

1.3.1.6 tikz-3dplot: Rotate arc around specific axis

http://tex.stackexchange.com/questions/257947/tikz-3dplot-rotate-arc-around-specific-axis

\documentclass[tikz]{standalone} 
\usepackage{tikz-3dplot} 
\begin{document} 
\begin{tikzpicture}[scale=2] 
% draw arcs 
\draw[canvas is zx plane at y = 1, line width = 1pt]  ...
 

- asked by Nico (11 votes), answered by sergej (7 votes)

1.3.1.7 How can I make a math version of itemize, enumerate, and description environments?

http://tex.stackexchange.com/questions/258192/how-can-i-make-a-math-version-of-itemize-enumerate-and-description-environment

tabular is to array as itemize is to a^\200\246? 
I'd like to have a list like 
\documentclass{article} 
\begin{document} 
\begin{eqlist} 
\item E=mc^2 
\item e^{i\pi}+1=0 
\item \text{ducks} + \text{caffeine} 
...
 

- asked by Sean Allred (10 votes), answered by touhami (13 votes)