{amsmath} is a package provided by AMS that enhances LaTeX's mathematical typesetting capabilities in various ways.

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3answers
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Force latex to show a square matrix as square

How can i force latex to print out square matrix as a square matrix with equal width and height in math-mode? I also read amsmath documentation, but don't found any useful help on it. For example ...
14
votes
1answer
6k views

AMS align / Align multiple “=”, too much space

I asked this question at stackoverflow and have been kindly redirected here. I'd like to align some equations in Latex using the AMS packages. Each equation has two equal signs that need to be ...
14
votes
1answer
434 views

Align to center

I want to align some equations to the equal signs, so I wrote this: \begin{align} -3z &=-9\\ z &= 3\\ -3y-3*3 &= 3\\ y &=-4\\ 2x+8*(...
14
votes
2answers
2k views

What's the difference between split and aligned?

I don't understand the difference between the split and aligned environments introduced by amsmath, so I'm posting this question as a place to collect what subtle details there may be. One thing ...
14
votes
1answer
464 views

align* environment left-aligned with LuaTeX and RTL math direction

When using LuaLaTeX, with the math direction set right-to-left, the contents of an align* environment is left-aligned instead of centered. Why does this happens? How can I fix it? \documentclass{...
13
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3answers
13k views

To write this norm equation better?

I have this norm \documentclass{article} \usepackage{amsmath} \begin{document} \begin{equation} \lVert f \rVert_{L_{2}(\Omega)} = \text{sup}_{ \begin{cases} v \in L_{2}(\Omega) \\ v \not= 0 \end{...
13
votes
5answers
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problem using option fleqn in amsmath package

I'm using the following code. What should I do if I don't want the fixed indent from the left margin of my page? ‎ \documentclass[‎fleqn,oneside‎]{article}‎ ‎\usepackage{amsmath}‎ .... \begin{align} ...
13
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2answers
15k views

Are \choose and \align incompatible?

I ran across a strange warning when trying to use the math command \choose inside the amsmath package's \align* environment: \documentclass{article} \usepackage{amsmath} \begin{document} \begin{align*...
13
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2answers
749 views

Breaking a theorem between pages

I currently have this custom myexample theorem environment that is working absolutely great. \newtheoremstyle{myexamplestyle}{}{}{}{}{\bfseries}{.}{ }{} \theoremstyle{myexamplestyle}\newtheorem{...
13
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3answers
9k views

A version of colorbox that works inside math environments

I'd like to highlight particular parts of an amsmath environment. Here's a minimal working example: \documentclass{article} \usepackage{amsmath,color} \newcommand{\abs}[1]{\lvert#1\rvert} \...
13
votes
3answers
12k views

AMS Split inside AMS Align

I'd like to have multiple lines inside a single align cell like so: \begin{alignat*}{1} = & \begin{split}x+\\ y\end{split} \end{alignat*} But I get an error like: \end{alignat*} \An extra &...
13
votes
2answers
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On \atop again: how to obtain the same result without warning

I know this question has been already discussed but the answer does not seem to work in my case. I am using the \atop command with the amsmath package to stack two symbols (more specifically $a=x$ ...
13
votes
2answers
8k views

Equations inside enumerate aligned on item's number

If I type \begin{enumerate} \item \begin{align*} eqn 1 eqn 2 \end{align*} \end{enumerate} the label will appear on the first lines and the equations will ...
13
votes
2answers
9k views

Putting equations in \intertext to annotate a proof

I'm trying to typeset a proof with Latex. When I do proofs, I like to alternate between a line of text, to explain each step, and the resulting equation. I also like to have the equations align at the ...
13
votes
2answers
8k views

vertical dotted line in column vector / amsmath matrix

I would like to typeset the following set of equations: ... but with contiguous, vertical dotted lines in the column vectors, such that the top and bottom rows of the matrix and of the vectors are ...
13
votes
1answer
3k views

Blank lines in align environment

Is there a way to insert a blank line between two equations in align environment? From what I understand a blank line is interpreted as \par and \par is not allowed in align. Can I disable this "...
13
votes
2answers
277 views

Automatically replace environment align by equation+aligned combination

I would like to automatically replace the align environment by an equation + aligned combination. Specifically, whenever \begin{align} occurs, it should automatically read it as \begin{equation}\begin{...
13
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1answer
11k views

\hbar new letter

I would want to know in which package the symbol \hbar is defined. In fact I ask this because I need to create a letter like \hbar but with 'k' instead of 'h'.
13
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2answers
2k views

Broken matrix - gaps in brackets

This is my minimal working example. \documentclass[12pt,a4paper]{mwrep} %\usepackage{amsfonts} \usepackage{amsmath} %\renewcommand\baselinestretch{1.5} \begin{document} \chapter{Example} \begin{...
13
votes
2answers
5k views

Increase spacing in split environment

I'm writing long equations with the split environment: \begin{equation} \begin{split} ... \\ ... \\ ... \end{split} \end{equation} The problem is that the single lines are a bit high, and there is ...
13
votes
2answers
4k views

Nesting subequations within align

subequations seems to only work outside environments such as align and equation. What if I want to preserve the alignment of the equal signs using align while also would like subequations numbering ...
13
votes
1answer
1k views

The font of operator names

What is the correct way of having all operator names be set in, say, sans serif? Saying \documentclass{article} \usepackage{amsmath} \makeatletter \def\operator@font{\sf} \makeatother \...
13
votes
3answers
714 views

Displaymath environment that can align equations and squeezes math

I have a long equation to align. Without squeezing the math, it is just barely longer than \textwidth. However, the align environment doesn't squeeze the math at all, which results in a badbox. \...
13
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4answers
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\qed or \qedhere at the end of split environment

While I was trying to improve my latest document with respect to its \qed symbols at the end of amsthm's proof environment i came across an interesting point. Assume the proof ends with some formula, ...
13
votes
2answers
3k views

Footnote in align environment

It appears that one is not supposed to use \footnote in math mode as per this appropriately named question: Footnote in math mode. However, it appears that I can get it to work without having to ...
12
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4answers
2k views

'Nudging' overset characters downwards

I am trying to make a vector-like symbol to use in a paper I'm writing. I am actually able to make almost exactly what I want in Mathematica, in which it looks like this: In TeX I am using $\...
12
votes
2answers
549 views

How to make underbrace label text wrap at brace width?

Is there a way to make underbrace label text automatically wrap at the underbraces width, preferably even with automatic syllabication? Example where brace label text exceeds underbrace width: $\...
12
votes
2answers
417 views

Manually controlled size of delimiters in macros

I am using the amsmath package and I'd like to control the size of my delimiters manually, i.e. using the \bigl, \Bigl, ... , \Bigr, \bigr commands, instead of \left, \middle, \right. Now I want to ...
12
votes
4answers
4k views

Text above matrices

I am new to latex and I am trying to create So far I have been able to create the matrices, like so: \[ N\textrm{ spectra} \begin{bmatrix} a_{11} & a_{12} & \cdots & a_{1M} \\ ...
12
votes
2answers
13k views

What is the Latex convention for sign function? [closed]

What is the correct type for sign(x)(signum function)? I'm using: \documentclass[journal,transmag]{IEEEtran} \usepackage{amsmath} \usepackage{amssymb} \newcommand{\sign}{\text{sign}} Is that ...
12
votes
3answers
4k views

Why doesn't lineno number a paragraph when it is followed by an indented equation?

While searching for the source of missing line numbers, I realized that paragraphs followed immediately by an equation have no line number, but this is fixed when a space is included, e.g. the ...
12
votes
2answers
579 views

Inconsistent behavior of boxes in amsmath's `gather`.

Recently I was working on a package (ytableau) and had a strange experience with the gather environment in amsmath. Namely, it screws with \vtop and, seemingly, with boxes that I reserve before ...
12
votes
2answers
3k views

Exchange meaning of : and \colon

I usually use the colon symbol : to denote maps. For set syntax there is the braket package. So as the spacing of : is not appropriate, I want it to behave like \colon. I tried \documentclass{article}...
12
votes
1answer
4k views

How do I rescale an align environment on a beamer slide?

I'm trying to resize an equation on a beamer slide to make it larger. However, the usual approach of using \scalebox doesn't seem to work: \begin{frame} \scalebox{2}{ \begin{align} x &= y\\ y ...
12
votes
2answers
347 views

Input manually a number into \eqref

Often while writing papers I find the need to cite particular equations from other papers. For example, the landmark paper by Einstein, Newton, and White (2015) lays out the theory of everything in ...
12
votes
1answer
401 views

Why is the \underbrace off the line?

I have the following problem with \underbrace: As you can see, the third underbrace and its comment are not in the line with the first two. Here is my code: \documentclass[a4paper,12pt]{article} \...
12
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1answer
2k views

How to typeset row operations on augmented matrix

I would like to typeset row operations on a augmented matrix, but the "gauss"-package does not seem to support the vertical line just before the last column, any way to do this? Thanks!
12
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2answers
206 views
+500

Xparse k argument to parse options at end of environment

I am trying to combine the solutions from How to properly use \collect@body within align environment Xparse t argument type (underscore with optional parameter) to parse optional parameters ...
12
votes
1answer
4k views

Does amsmath provide any medium to auto-break equations?

I'm writing large equations in texlive with amsmath, and I want them to be automatically broken at the end of the line. Is there any way to do that with amsmath? What would you recommend me to do ...
12
votes
1answer
721 views

Lost labels using intertext with varioref and hyperref

I have a problem using \intertext together with \vref when hyperref is also used. Consider the following minimal example: \documentclass{article} \usepackage{amsmath, varioref} \usepackage{...
12
votes
1answer
455 views

What would be the appropriate technique for typesetting a “where” list of variable specifications after an equation?

I'm often finding I need to lay out an equation in a manner resembling the following source: \begin{align*} x = y + z \end{align*} where $y = $ the value of $y$; $z = $ the value of $z$. ...
12
votes
1answer
2k views

stmaryrd and boldsymbol: avoid warnings

Here are two examples: 1 \documentclass[a4paper,10pt]{article} \usepackage{amsmath} \begin{document} $\boldsymbol x$ \end{document} 2 \documentclass[a4paper,10pt]{article} \usepackage{amsmath}...
12
votes
1answer
20k views

Aligning the right parts in multiple \begin{cases}

Is there an intelligent way to left-align the parts right of & of the two cases environments shown below (if x >= 0, otherwise, if y < 0, otherwise). I wonder if there is a better way than ...
12
votes
2answers
519 views

Equation number enclosing parentheses misplaced with Polyglossia+Hebrew+amsmath

I am compiling the following MWE using XeLatex within TeXnicCenter and get a garbled equation number: \documentclass{article} \usepackage{amsmath} \usepackage{polyglossia} \setmainlanguage{hebrew} \...
11
votes
5answers
2k views

parenthesis around underbrace too big

I have the problem that I want to have an equation with underbrace but the surrounding parenthesis shall not include the underbrace, i.e. should have the size as if the underbrace wasn't there. Here ...
11
votes
3answers
521 views

How do I adjust \underbrace spacing?

I have an equation like this \documentclass{article} \usepackage{IEEEtrantools} \usepackage{amsmath} \begin{document} \begin{IEEEeqnarray*}{rClCl} \left( \begin{array}{c} f\frac{X}{...
11
votes
2answers
842 views

How can I add clips above matrix?

\documentclass{mwrep} \usepackage{kbordermatrix} \usepackage{amsmath} \begin{document} \begin{equation} \bar{P}= \kbordermatrix{ \mathrm{state} & 1 & 2 & 4 & 3 & 6 & ...
11
votes
4answers
12k views

How to show two groups of equations side by side: one implies the other?

I would like to show a bunch of equations can imply another bunch of equations, with double right arrow in between. Here are two trials of mine: one is to use another level of math mode to enclose the ...
11
votes
3answers
32k views

Clean-Looking Piecewise-Defined Functions

I want to write a clean-looking piecewise defined function. There's a similar post here: How to write a function (piecewise) with bracket outside?, but I have follow-up questions. The two options I ...
11
votes
4answers
216 views

Aligning the long equations

I have read all of the different solutions for fitting long formulas in a page, yet I am still not satisfied with the output I get. The formulas are right aligned which does not look good. Would you ...