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

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1answer
162 views

alignment in align-env: what is aligned in what way?

In this example: \begin{align*} & \lim( \neg ( \Sigma^* a_1 \Sigma^* a_2 \dotsb a_n \Sigma^* ) ) & = & \{ \alpha \in \Sigma^\omega | \exists^\omega n : \alpha [0,n] \notin \Sigma^* a_1 \...
1
vote
1answer
344 views

combine several align-environments

I want to combine several align-environments but reset the alignment at some point. Esp., I want to combine these: \begin{align*} & \lim(\emptyset) = \ext(\emptyset), \lim(\Sigma^* a_1 \Sigma^* ...
2
votes
2answers
576 views

Why does \everydisplay conflict with gather and multline

When gather* is used together with \everydisplay an error is produced. Is there a possibility to make these work together? Minimal working example: \documentclass{ctexart} \usepackage{amsmath,color} ...
3
votes
2answers
2k views

Why the pmatrix environment get a higher parenthese than pmatrix command?

I found the amsmath package's pmatrix environment have a bit difference with LaTeX's pmatrix command. You can see it from: \documentclass{article} % \usepackage{amsmath} \linespread{1.3} \begin{...
2
votes
1answer
2k views

How to change the position of underset?

In the command: \underset{t \rightarrow x}{\limsup} f(t) = \underset{t \rightarrow x}{\liminf} f(t) I get the {t \rightarrow x} lower under the limsup then the liminf (due to the "p" in limsup). ...
5
votes
1answer
3k views

How to change the way theorems are displayed with LyX?

The theorems are currently all displayed in bold, but I would like to display them in small-caps. My question is much like this one. However, I am using LyX with an AMS style document class, and was ...
7
votes
1answer
780 views

How can I use cross-references and hyperlinks to parts of an align environment?

I'm writing an exercise book, and in some exercises I'll have several numbered equations in an align environment, e.g., (1) x^2+x+1=0, (2) ax^3+2x=0, (3) x^5=2i, (4) x^4=-i, (5) x-1/x=2, (6) cosh(...
19
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2answers
4k views

How do I do a one-shot MathOperator?

The amsmath packages helpfully define a macro \DeclareMathOperator which does what it says on the tin: it declares a mathematical operator such as \sin or \Null or whatever and typesets it all nice ...
9
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3answers
3k views

Cases with square brackets

How can I subdivide in cases with square brackets? I mean I want to write: ⌈ 2_i if ... rank (q, l) = | 2_i + 1 if ... ⌊ .... with square brackets, not ...
2
votes
2answers
1k views

overbrace but leave spacing in math unaffected

I would like to use an overbrace, but I do not want how much text I put in the overbrace to affect the spacing of the math (i.e. I don't want the the "a" and the "b" to get further apart in the ...
2
votes
1answer
896 views

Aligning equations by row and column — with vertical lines

I want to include two sets of equations side-by-side in a table. Here is my example: \documentclass{article} \usepackage{amsmath} \newcommand{\eqnbox}[2]{ \begin{minipage}[c]{#1\linewidth}\begin{...
8
votes
2answers
1k views

\frenchspacing not setting the space factor codes correctly?

When I type \showthe\frenchspacing, I get the following output: > \frenchspacing=macro: ->\sfcode `\.1006\sfcode `\?1005\sfcode `\!1004\sfcode `\:1003\sfcode `\;1002\sfcode `\,1001 . Shouldn't all ...
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 "...
6
votes
1answer
2k views

unicode-math and amsmath environments

I'd like to use unicode-math but I've run into some problems. The following mwe, compiles without problems. The aligned environment is used \documentclass{article} \usepackage{amsmath} \usepackage{...
8
votes
1answer
2k views

Multiply defined labels using hyperref

I'm using the stackrel command to indicate important steps in the transformation of formulas. E.g. I would write: A\stackrel{(!)}{=}B so that I can later explain in text why exactly A equals B. I've ...
2
votes
2answers
4k views

\dot over \vec over : amsmath bug/feature?

I was trying to typeset the time derivative of \vec{r}_\alpha, and naively, I put it as an argument to \dot. This does not work: the arrow is not on r anymore. Here is a minimal example: \...
22
votes
4answers
2k views

How can I break an align environment for a paragraph?

I would like to have two displayed equations, broken by a short paragraph, but with aligned equal signs (as if using the align environment). Is there some way to "break" the align environment ...
11
votes
2answers
4k 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? ...
7
votes
4answers
11k views

Centering split equation

I am quite new to TeX. I want that each line in the following equation be centered, but I cannot find how to do it. \documentclass{article} \usepackage{amsmath} \begin{document} \begin{equation} \...
13
votes
5answers
15k 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} ...
3
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2answers
2k views

overbrace/underbrace but with an arrow instead

Is there a similar command to \overbrace{foo}^{bar} but instead of braces, an arrow pointing up/down? EDIT: Here's a little demonstration of how I'd expect something like this to work: And ...
7
votes
1answer
678 views

Change the equation font locally

I want to change the equation font to mathbf in a single equation environment, equation or align. How do I do that? I tried \begin{align} \begin{mathbf} equation1 \\ equation2 \end{mathbf} \end{...
5
votes
3answers
9k views

String/vector concatenation symbol

I'm looking for a math symbol to represent the concatenation of two vectors: if x = (x1, x2) and y = (y1, y2) then x ? y = (x1, x2, y1, y2). I'm not very much at home in vector calculus, so I don't ...
7
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3answers
3k views

Strange spacing with gathered and aligned

I often want to list a number of short equations (like the non-zero components of a tensor) under a single equation number. To do this I use combinations of the amsmath environments equation, gathered ...
2
votes
2answers
221 views

How Do I Horizontally Center An Operator Relative To Aligned Equations Above and Below

I want to achieve the following effect in a new enviornment I'm defining where the stuff inside what's supposed to be delimeters is a \begin{aligned} \end{aligned} block. \begin{equation} ...
9
votes
1answer
4k views

Placing equation number on left with reqno option in amsart document class

Is there a way to force individual equations to place their equation numbers (or more specifically the result of a \tag*{blah}) on a specific side of the page regardless of the options to amsart. I ...
7
votes
2answers
1k views

multline inside gather?

I have 3 related equations, two of them do not fit on a single line. I want to present them in a gather-environment, but how to do linebreaks inside equations? multline does not work inside gather. ...
5
votes
2answers
966 views

Multi-column delimiter in align

I want to set the following, but with all the <'s aligned horizontally Source of this failed attempt: \documentclass[12pt]{article} \usepackage{amsmath} \usepackage{amssymb} \begin{document} ...
38
votes
3answers
11k views

Centering \vdots in a system of many equations

I have a system of equations with an arbitrary number of equations (k). I'd like to use \vdots to compactly describe the system, like so: \begin{align*} R(-1) &= \sum_{i=1}^m A(i)R(i-1) \\ R(-...
80
votes
6answers
36k views

How can I write multiple lines in a subscript?

Is there a way to force a line break inside a math mode text? My example: \[ \underbrace{....}_\text{Some long text that should be multiline} \] Trying \text{Some long text that\\ should be ...
10
votes
1answer
4k views

Minimum length for \xrightarrow

I want to place text over arrows. The obvious choice is to use the amsmath command \xrightarrow{#1} However, sometimes the text above may be a single digit: %Example 1 \xrightarrow{1} other times ...
22
votes
1answer
13k views

About big parenthesis larger than Bigg

Do any one know how to type a very big parenthesis in LaTeX. Since the formula is very big, I used multline environment, in one line, there are many pair of parenthesis by using \left and \right which ...
3
votes
2answers
3k views

AMS align: Left aligned text/math plus multicolumn align

This question is basically a combination of two previous posts: Adding left aligned text to an equation. and AMS align / Align multiple “=”, too much space (the latter being my own question). What I ...
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 ...
3
votes
0answers
1k views

Can one make 3-column alignments with amsmath? [duplicate]

Possible Duplicate: Align two inequalities I'd like to make an {align} with three columns, with an [rcl] type alignment, to typeset something like a < b < c a < bb < c a < ...
3
votes
1answer
4k views

Two matrices side by side

I'm trying to typeset two matrices side by side, somewhat like: A = (matrix) B = (matrix) I tried to next the matrices inside an align environment: \begin{align*} A &= \begin{pmatrix} ... ...
6
votes
1answer
697 views

How to write centered multi-line conclusion in inference rule?

I'm using the semantic package to write inference rules and I have trouble with the following: \usepackage[inference]{semantic} \usepackage{amsmath} \begin{equation} \inference{ expr }{ \begin{...
9
votes
2answers
573 views

amsmath align within list

In the code below, the equation within the itemize environment is too wide for the page, but I don't get an overfull hbox warning (which I find annoying because it's sometimes useful to know exactly ...
8
votes
1answer
2k views

Trick LaTeX into doing double superscripts

I have a function in my .sty sheet that does a second partial derivative: \newcommand{\hpartdsq}[2]{\dfrac{\partial^2 #1}{\partial #2 ^2}} But I'd like to pass it something that already has a ...
21
votes
2answers
4k views

Multiset notation in LaTeX

Does anyone know how to make (nice looking) double bracket multiset notation in LaTeX. i.e something like (\binom{n}{k}) where there are two outer brackets instead of 1 as in binomial? You can see an ...
9
votes
1answer
202 views

Ensuring that vertical space is consistent in list of polynomials

\documentclass{article} \usepackage[fleqn]{amsmath} \usepackage{mathrsfs} \usepackage{amsfonts} \pagestyle{empty} \setlength\mathindent{0pt} \begin{document} \[3x^3\] \[3x^2\] \[3x\] \[3\] \end{...
21
votes
2answers
8k views

Is there a difference between the `displaymath` and `equation*` environments?

The amsmath documentation says Basic LaTeX doesn’t provide an equation* environment, but rather a functionally equivalent environment named displaymath. Are they really the same or is there a ...
14
votes
1answer
4k views

How can I write multi line equations with alignment in inline math mode?

Is there any way to override the fact that certain environments in LaTeX are automatically "displayed"? One such example is the align* environment. I want to keep my aligned equations inline. So ...
15
votes
2answers
6k views

Split-like environment inside cases environment

I'd like to have a cases environment with some cases that are too long to fit on one line. I tried this: \begin{cases} \begin{split} long expression \\ second line of long expression \end{...
18
votes
1answer
24k views

Text over/under implies arrow?

I'm currently trying to write over/under an implies arrow in LaTeX (in math mode): \implies_{text} This places the text lower, but next to the arrow, not below it. How can I get it below the arrow?...
12
votes
2answers
578 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 ...
15
votes
2answers
3k views

Extendible equals sign

I have a command that has been floating around in my standard preamble for a while: \newcommand{\xeq}[1]{\stackrel{\;#1}{\cleaders\hbox{=\!}\hfill}\:} It is meant to mimic the AMS-LaTeX extendible ...
11
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 ...
38
votes
6answers
41k views

Mathematical symbol for disjoint set union

In our lecture script, we use the notion of disjoint set union. It uses a special symbol to differentiate the disjoint from the usual set union, where we add an extra dot inside of the \cup symbol. Is ...
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 &...