11.39.2 Greatest hits from previous weeks

11.39.2.1 How do I change the `enumerate` list format to use letters instead of the default Arabic numerals?
11.39.2.2 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?
11.39.2.3 How can I split an equation over two (or more) lines
11.39.2.4 What is the "correct" way of embedding text into math mode?
11.39.2.5 What are all the font styles I can use in math mode?
11.39.2.6 Change image size
11.39.2.7 Big Parenthesis in an Equation
11.39.2.1 How do I change the `enumerate` list format to use letters instead of the default Arabic numerals?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2291

I've seen documentation whereby an \alph command is put around the \begin{enumerate} somewhere, but I'm not entirely sure how that operates... 
[numbering] [lists] [enumerate]
 
asked by Billy ONeal https://tex.stackexchange.com/landing/r/digest?cta=user&id=192 Score of 450
answered by frabjous https://tex.stackexchange.com/landing/r/digest?cta=user&id=411 Score of 396
11.39.2.2 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
11.39.2.3 How can I split an equation over two (or more) lines

https://tex.stackexchange.com/landing/r/digest?cta=question&id=3782

I am having the following equation: 
\begin{equation} 
Q(\lambda,\hat{\lambda}) = -\frac{1}{2} P(O \mid \lambda ) \sum_s \sum_m \sum_t \gamma_m^{(s)} (t) \left( n \log(2 \pi ) + \log \left| C_m^{(s)} ... 
[math-mode] [equations] [line-breaking] [breqn]
 
asked by Peter Smit https://tex.stackexchange.com/landing/r/digest?cta=user&id=459 Score of 363
answered by Will Robertson https://tex.stackexchange.com/landing/r/digest?cta=user&id=179 Score of 227
11.39.2.4 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
11.39.2.5 What are all the font styles I can use in math mode?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=58098

As can be seen in above picture, there are lots of fonts or font styles that can be used in math mode. 
What are all the fonts or font styles I can use in math mode, and which packages are required in ... 
[fonts] [math-mode] [big-list] [latin-modern] [computer-modern]
 
asked by doncherry https://tex.stackexchange.com/landing/r/digest?cta=user&id=4012 Score of 631
answered by Christian https://tex.stackexchange.com/landing/r/digest?cta=user&id=13450 Score of 813
11.39.2.6 Change image size

https://tex.stackexchange.com/landing/r/digest?cta=question&id=64836

I'm trying to change the image size (make it look smaller than the original). 
I tried with the next code but the image still shows at its original size. 
\begin{figure}[h!] 
\centering 
\... 
[graphics]
 
asked by Enrique https://tex.stackexchange.com/landing/r/digest?cta=user&id=16973 Score of 128
answered by DJJerome https://tex.stackexchange.com/landing/r/digest?cta=user&id=2863 Score of 121
11.39.2.7 Big Parenthesis in an Equation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=38868

I have an equation contained inside \[...\], which automatically makes a \sum with sub- and superscripts turn big--so that the summation sign looks awkward inside parenthesis.  Any idea how to make ... 
[math-mode] [delimiters]
                                                                                  

                                                                                  
 
asked by jamaicanworm https://tex.stackexchange.com/landing/r/digest?cta=user&id=9757 Score of 270
answered by qubyte https://tex.stackexchange.com/landing/r/digest?cta=user&id=9043 Score of 397