# Tag Info

### How do I align equations along operators within parentheses?

Remark: I thoroughly updated this answer after learning from the OP what the (to me) unusual cruciform layout of the five additive terms across three lines was meant to signify. The following one-line ...
• 435k
Accepted

### Arevmath and letter a

Legacy fonts, with only 128 or 256 slots, required much coding gymnastics and many font support files. For arevmath package, for a, the tt and tt bold ones might be what you're after. Otherwise, the &...
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### how to write this in latex form

The representation of a vector $\vec{v}= \langle a,b,c \rangle$
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### split matrices over two lines using array

Something like this? (Note that I've gotten rid of all \left and \right sizing directives and all \, spacing directives.) \documentclass[a4paper,twoside,12pt,openany]{report} \usepackage{mathtools} \...
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### How do I align equations along operators within parentheses?

I think that the other options discussed here look much better and are significantly more readable, but if you are using LuaLaTeX and really want to do such odd alignments you can use my luamathalign ...
• 29.9k
Accepted

### Get a proper double-struck one while using amsmath

Your code isn't working because (1) you don't load amsmath so \DeclareMathOperator is not defined, and (2) where you use \id you are already inside math mode because of the , and so ...
• 35.6k

### how to write this in latex form

Typing \vec v=\langle a,b,c\rangle will do.
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