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

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13
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2answers
422 views

Why must \DeclareMathOperator be in the preamble?

What is the rationale for requiring \DeclareMathOperator to be in the preamble? Why are users not allowed to restrict the scope of an operator definition to a particular chapter or environment, like ...
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
645 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
votes
2answers
2k views

Footnote in align enviroment

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
votes
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
6answers
26k views

\qed for theorems without proofs

It is common to place a \qed-Box at the end of a theorem statement (or lemma, corollary, ...) if we give no proof for that statement. How can I do this in LaTeX? If I place a qed-box at the end of ...
12
votes
5answers
13k views

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} ...
12
votes
2answers
12k 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} ...
12
votes
2answers
425 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
366 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
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 ...
12
votes
2answers
571 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
2k 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 ...
12
votes
4answers
3k 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
302 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
341 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
votes
1answer
1k 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
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 ...
12
votes
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} ...
12
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 ...
12
votes
1answer
671 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} ...
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} ...
11
votes
3answers
390 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} ...
11
votes
3answers
8k 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 ...
11
votes
2answers
767 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
10k 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
8k 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} ...
11
votes
4answers
208 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 ...
11
votes
2answers
3k views

What's the difference between align and align*?

After some brief searching I can't find the difference between align and align*. Google summarily ignoring the * is making it harder I think. Can you tell me the difference between these two? ...
11
votes
2answers
2k views

Too small space when using \DeclareMathOperator

Currenlty I'm writing a math script (ring theory, PDF). When I need a new math operator I use \DeclareMathOperator from the amsopn-package. However I noticed some strange behaviour when using an ...
11
votes
2answers
6k views

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 $a=x$ ...
11
votes
2answers
7k 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 ...
11
votes
2answers
2k views

$\VDash$ Symbol in AMS math packages?

I'm trying to typeset some homework that deals with set theory and in particular I'm trying to write the "model-theoretic" notion of forcing. I put model-theoretic in quotes because I don't know the ...
11
votes
3answers
16k views

aligned environment of amsmath vs array environment

Today I found out the existence of the aligned environment of the amsmath package. However, I can't see the advantage of using it instead of the array environment from the example provided in ...
11
votes
2answers
339 views

Compute remaining horizontal space in align environment

I use align* often and sometimes it is preferable to add text to the right hand side of an equation instead of using \intertext, or \shortintertext, which tends to interrupt the math flow. This is ...
11
votes
3answers
3k 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 ...
11
votes
3answers
23k views

Using \gather and \align together

I'm very picky regarding alignment inside my proofs. What's frustrating me right now is that I have some lines that I want to be center-aligned (using \begin{gather}) and others that I wish to align ...
11
votes
2answers
2k views

\mathrel conflict with \left,\right,\middle

I refer to this question and particularly to this answer. I defined \set by \usepackage{mathtools} ... \DeclarePairedDelimiterX\set[2]{\{}{\}}{#1 \mathrel{\delimsize|} #2} where ...
11
votes
3answers
4k views

Defining a command for amsmath's align environment

I'd like to define a shorthand command for \begin{align*} and \end{align*}. When I write \newcommand{\ba}{\begin{align*}} it works fine. But when I write \newcommand{\ea}{\end{align*}} ...
11
votes
1answer
3k 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 ...
11
votes
1answer
7k views

Using `\allowdisplaybreaks` locally for a single chapter / single equation

I do have a longer paper. In one chapter I got several multiline equations, which I wrote using the align environment from amsmath-package. Actually those are quite long computations which should ...
11
votes
1answer
10k 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'.
11
votes
3answers
168 views

Incorrect spacing after minus sign with combination of amsmath and hyperref

When no packages are loaded, no space is inserted after the minus sign of a negative number: \documentclass{article} \begin{document} \begin{equation} -1 = -1 % output: -1 = -1 \end{equation} ...
11
votes
2answers
12k views

How to put the QED symbol of a proof at the right place inside align?

When a proof ends with a formula in equation or equation* environment, putting \qedhere after the equation would cause the QED symbol to appear in the right place. I.e. at the end of the line in which ...
11
votes
1answer
1k views

How can I make an overset symbol at the same size and height as \bar except with a different symbol?

Apologies for the cryptic title, but I was not sure how best to phrase the question in one sentence. I am essentially trying the create a vector symbol with \rightharpoonup as the top instead of the ...
11
votes
4answers
555 views

Curved arrow describing a step in a mathematical derivation

Is it possible to achieve something like this in LaTeX? I want a curved arrrow pointing from 1st line to the other line and is coupled with an equation number which indicates the equation used. I ...
11
votes
1answer
6k views

Vertical spacing before and after equation environment: empty line or not?

The vertical spacing in front of and behind the amsmath equation environment is different whether I insert a blank line or not (im using KOMA-Script with parskip=half if this is important). I'd like ...
11
votes
1answer
1k views

Move QED symbol to the left, i.e. at the end of the sentence

I want to make the qed symbol at the end of a proof appear at the end of the last sentence, not at the far right of the same line. Would like to do this the simplest way possible. All I can find ...
11
votes
1answer
2k views

Referencing subequations with cleveref

I try to refer to the parent number of subequations with \cref from the cleveref package. However, I would like to change the output "eq. (...)" into "eqs. (...)" when I refer to parent numbers ...
11
votes
4answers
4k views

\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, ...