Greatest hits from previous weeks

11.42.2 Greatest hits from previous weeks

11.42.2.1 Nice scientific pictures show off
11.42.2.2 What is the "correct" way of embedding text into math mode?
11.42.2.3 How to write two dot above a letter?
11.42.2.4 How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?
11.42.2.5

Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?

11.42.2.6 How to write 'A~\[Currency]' and other umlauts and accented letters in bibliography?
11.42.2.7 How to align a set of multiline equations

11.42.2.1 `Nice scientific pictures show off`

https://tex.stackexchange.com/landing/r/digest?cta=question&id=158668

Task 
Show off your best scientific illustration ! 
The main purpose of this question is to share beautiful scientific pictures, preferably with an educational aspect. 
Content 
Your post must contain ... 
[diagrams] [3d] [technical-drawing] [fun] [big-list]

asked by Thomas https://tex.stackexchange.com/landing/r/digest?cta=user&id=42660 Score of 579

answered by Charles Staats https://tex.stackexchange.com/landing/r/digest?cta=user&id=484 Score of 348

11.42.2.2 `What is the "correct" way of embedding text into math mode?`

https://tex.stackexchange.com/landing/r/digest?cta=question&id=3415

Lets say I have something like: 
\[ Let x = number of cats \] 
(This is a contrived example, but pretend we are actually inside a long align environment block...) "Let" and "number of cats" need to be ... 
[math-mode]

asked by Billy ONeal https://tex.stackexchange.com/landing/r/digest?cta=user&id=192 Score of 307

11.42.2.3 `How to write two dot above a letter?`

https://tex.stackexchange.com/landing/r/digest?cta=question&id=152951

the two dots above a letter represents two derivative of varible t. 
My method: 
\documentclass[UTF8]{ctexart} 
\usepackage{amsmath} 
\usepackage{amssymb} 
\usepackage{graphicx} 
\usepackage{epstopdf} 
\... 
[math-mode] [accents]

asked by mma https://tex.stackexchange.com/landing/r/digest?cta=user&id=43727 Score of 152

answered by Cain https://tex.stackexchange.com/landing/r/digest?cta=user&id=28428 Score of 208

11.42.2.4 `How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?`

https://tex.stackexchange.com/landing/r/digest?cta=question&id=225523

I would like to make a partial differential equation by using the following notation: 
dQ/dt 
(without / but with a real numerator and denomenator). Earlier today I got help from this page on how to ... 
[equations]

asked by David https://tex.stackexchange.com/landing/r/digest?cta=user&id=71265 Score of 147

answered by Sebastiano https://tex.stackexchange.com/landing/r/digest?cta=user&id=117876 Score of 22

11.42.2.5 `Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?`

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2369

When typing < or > in LaTeX and compiling with pdflatex, the less than and greater than symbols appear at upside down exclamation points. I'm not in math mode. 
[symbols] [punctuation] [font-encodings]

asked by biased_estimator https://tex.stackexchange.com/landing/r/digest?cta=user&id=996 Score of 333

answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 300

11.42.2.6 `How to write 'A~\[Currency]' and other umlauts and accented letters in bibliography?`

https://tex.stackexchange.com/landing/r/digest?cta=question&id=57743

How to write in bibliography (package natbib) letter "a" with two dots above? Specially, I mean the word BirkhA~\[Currency]user. 
Is there a general rule or way how to write such umlauts or other accented letters ... 
[bibtex] [accents] [characters]

asked by Laura https://tex.stackexchange.com/landing/r/digest?cta=user&id=14475 Score of 438

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 592

11.42.2.7 `How to align a set of multiline equations`

https://tex.stackexchange.com/landing/r/digest?cta=question&id=44450

I am trying to align a set of long equations, that are themselves align environments as most of them are spreading on multiple lines. 
Currently I just have a sequence of align environments, with ... 
[equations] [align]

asked by SeismicVibrations https://tex.stackexchange.com/landing/r/digest?cta=user&id=11737 Score of 136

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11.42.2 Greatest hits from previous weeks

11.42.2.1 Nice scientific pictures show off

11.42.2.2 What is the "correct" way of embedding text into math mode?

11.42.2.3 How to write two dot above a letter?

11.42.2.4 How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?

11.42.2.5 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?

11.42.2.6 How to write 'A~\[Currency]' and other umlauts and accented letters in bibliography?

11.42.2.7 How to align a set of multiline equations

11.42.2.1 `Nice scientific pictures show off`

11.42.2.2 `What is the "correct" way of embedding text into math mode?`

11.42.2.3 `How to write two dot above a letter?`

11.42.2.4 `How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?`

11.42.2.5 `Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?`

11.42.2.6 `How to write 'A~\[Currency]' and other umlauts and accented letters in bibliography?`

11.42.2.7 `How to align a set of multiline equations`