Questions tagged [align]
{align} is an environment provided by math packages that permits multiple related equations to be aligned at a common reference point, usually a sign of relation. For general questions about aligning document elements, use {horizontal-alignment} or {vertical-alignment} instead.
3,890
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Show equation number only once in align environment
I want the equation number to be shown only at the last line, or better, somewhere in the middle of all. So instead of (1), (2), ... only (1).
I use \begin{align} ... \end{align}
- 2,843
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votes
5
answers
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eqnarray vs align
Motivation
I want to include a list of related equations, say, for a proof, in my LaTeX document. As far as I know, I have two good options, eqnarray and align.
Question
What is the difference ...
- 3,425
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votes
5
answers
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What are the differences between $$, \[, align, equation and displaymath?
I once learnt, that it is uncool to use $$, but why is that? Why does \[ not act as a abbreviation to \begin{align}? I noticed, that there is a difference, since one cannot use & and \\ inside a ...
- 2,193
186
votes
4
answers
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How to get only one vertically centered equation number in align environment with two equations
What I have are two equations with align and I want one single equation number to refer to this system of equations. To illustrate, I have
\begin{align}
dr_t &= \kappa ( \theta - r_t ) dt + \...
- 3,365
171
votes
6
answers
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align* but show one equation number at the end
I am using align*, but I still need an equation number. I know one solution is to use align and add \nonumber to all lines but the last. Is there a 'lazy' way to do it?
I searched a little and found ...
- 1,943
128
votes
8
answers
584k
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How to align a set of multiline equations
I am trying to align a set of long equations, that are themselves align environments as most of them are spreading on multiple lines.
Currently I just have a sequence of align environments, with ...
- 1,383
123
votes
7
answers
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Align equation left
Here is my split equation:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{equation}
\begin{split}
a_{ijk} =& \frac {Pr(M_{I} =2 \& M_J=1 \& M_K =1 | I=i , J=j , K=...
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votes
4
answers
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What does a double ampersand (&&) mean in LaTeX?
I've seen several answers that use the double ampersand, but I can't figure out exactly what it does.
I tried this out:
\begin{align*}
\frac{3x + y}{7} &= 9 & \text{given} \\
3x + y &...
- 1,139
88
votes
3
answers
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Multiple alignment
In the following piece of code
\begin{align*}
[x \mapsto s]x &= s \\
[x \mapsto s]y &= y \qquad \text{als } y\neq x \\
[x \mapsto s](\la{y}t_1) &= \la{y}[x \mapsto s]t_1 \qquad \text{als }...
- 1,199
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votes
4
answers
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Referencing within an align environment
The following LaTeX document:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
E=mc^2 \\ \nonumber
E=mc^2 \label{eq1}
\end{align}
ref \ref{eq1}
\end{document}
Does ...
- 6,829
73
votes
1
answer
122k
views
Aligning equations with text with alignat
I'm trying to add this expression to my work:
I understand that the best way to achieve this is using the alignat environment within the amsmath package, so I tried the following:
\begin{alignat*}{3}...
- 895
68
votes
1
answer
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What is the difference between split, multline, align, breqn for breaking an equation into multiple lines?
Sorry, if this question sounds a bit amateurish, but I haven't been able to find a good summary about the differences between these four environments for multi-lining an equation. Where do they differ ...
- 1,215
64
votes
1
answer
61k
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Multiple Alignment in equations
The following equations need to be aligned in two spots. If I use the align* environment then the second column of alignment is pushed to the right edge of the page. I googled this and saw that ...
- 1,229
60
votes
4
answers
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side-by-side equations, with equation numbers for each
The align command from amsmath allows me to put two equations side-by-side:
\begin{align}
x = y && a = b
\end{align}
Unfortunately for my purposes, this shows both equations under one ...
- 1,575
60
votes
3
answers
39k
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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(-...
- 1,302
59
votes
1
answer
73k
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amsmath align environment: row spacing
How can I stretch the spacing between consecutive lines in an align* environment? I have a few lines with \fracs in which both the numerator and the denominator consist of textual phrases, not math ...
- 1,937
52
votes
3
answers
251k
views
Align multiline equation with expression after equal sign
I am trying to align a multiline equation using array within the equation but it turns out it doesn't do very well. The code I am using is as follows:
\begin{equation} \begin{array}{lcl}
\mathcal{...
- 2,503
51
votes
4
answers
69k
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Remove vertical space around align
I need to display math in my report, but is it possible to remove the vertical space around align*?
A little example is the following (where I just want the align* to have the same vertical space as ...
- 1,513
50
votes
1
answer
68k
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Change font size of an align environment
In a document, I'd like to change the font size of a single align environment (not globally throughout the document). What is the proper way to do this? I've been using
Preceding paragraph.
{\tiny
...
- 603
48
votes
4
answers
136k
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Aligned equations in LaTeX
I have a long equation in LaTeX, which I need to break up into more lines. I've done this, although its not quite what I was looking for. Here is a MWE showing my problem:
\documentclass[10pt]{...
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votes
3
answers
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How can I use an align environment flush left?
Is there a way possible to imitate the align environment for math mode commands, without having all writing being placed toward the center on the output page?
MWE:
\documentclass{article}
\...
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47
votes
1
answer
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How can I add left aligned text to an equation?
I have a document I am trying to copy to learn TeX. Here is what I have encountered: How can I have the "or" in the equation. This is what I have right now:
\[ f = ma; \]
But $a$ is the change in ...
- 1,419
45
votes
1
answer
182k
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Getting arguments underneath \min in an align environment
I am wondering how can I ensure that an argument gets placed underneath \min when I use an align environment.
When I use math mode and write
\[
min_{x_1,\dots x_T}
\]
the {x_1,\dots x_T} is ...
- 952
44
votes
1
answer
21k
views
What is the difference between \notag and \nonumber in align environment?
I use \notag or \nonumber in align environment but there seems no any difference when display. What is the difference between these two commands?
- 859
43
votes
1
answer
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Uncover lines of an align environment with beamer
Is there any way to uncover equation-lines of an align* environment line per line in a frame conveniently?
somethink like
\begin{align*}[<+->]
a &= b \\
b &= c \\
\...
- 1,435
41
votes
5
answers
108k
views
How to correctly format (and align) a LaTeX proof?
I'm new to LaTeX and I'm trying to figure out how to correctly format a proof. Can someone show me a basic template for how to do this?
The part I am having the most trouble with is creating new ...
- 731
41
votes
2
answers
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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 ...
- 991
38
votes
3
answers
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Two sets of aligned equations in two columns?
Say I have a set of equations:
(1)
\begin{align}
wx&=u\\
wy&=v\\
w&=10
\end{align}
(2)
\begin{align}
x&=u/w\\
y&=v/w\\
\end{align}
How can I do the following: put (1) and (2) ...
- 565
37
votes
1
answer
51k
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Split expressions with parentheses in align environment
I am writing down a rather long expression, which has to be splitted in a align environment. The thing is that this expression has parentheses which have to be splitted too. I don't want to use ...
- 12.3k
36
votes
5
answers
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Problem with beamer's \pause in alignments
I have the following code, (edit:) now without aligned.
\documentclass{beamer}
\mode<presentation> { \setbeamercovered{transparent} }
\begin{document}
\begin{frame}
\[
\begin{cases}
%\...
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35
votes
4
answers
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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 ...
- 4,933
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votes
7
answers
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Vertical alignment of align* in enumerate
Related (but not the same):
Align number from enumerate with equation
Displaying an equation in a list
Earlier today I asked a question about aligning equations in an enumerate environment and ...
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votes
3
answers
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views
Use flalign or alignat or align or similar environment to align to the left
The following is a small example to use flalign environment to generate equation.
\documentclass{article}
\usepackage{amsmath}
\usepackage{txfonts}
\begin{document}
The formula is:
\begin{flalign*}
...
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votes
5
answers
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What is the difference between aligned in displayed mode and starred align?
I am confused in choosing one of the following approaches.
\documentclass{article}
\usepackage{siunitx}
%\sisetup{detect-all}
\usepackage{amsmath}
\parindent=0pt\relax
\begin{document}
The following ...
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votes
2
answers
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align inside of tabular
Today I failed using an align-environment inside of a tabular-environment.
Consider the following example:
\documentclass[12pt]{scrbook}
\usepackage[english]{babel}
\usepackage[utf8]{inputenc}
\...
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33
votes
2
answers
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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?
...
- 1,519
32
votes
3
answers
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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 amsldoc....
- 2,228
32
votes
2
answers
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views
How to number the letters of a sentence?
I need to number the letters of a sentence consecutively.
Every letter should have the corresponding small number centered below it (see image below).
Does anybody know how to do this? I tried \...
- 321
31
votes
1
answer
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Multiple labels in aligned environment
I would like to format an optimization problem by
\documentclass{article}
\usepackage{amsmath}
\begin{document}
We want to label each line separately. The inserted text and formulas
have to be ...
- 1,031
30
votes
3
answers
11k
views
Alignment of equals sign in multiple align environments
I have multiple align environments in my document, separated by a small paragraph of text:
\begin{align*}
foo &= something very very long compared to the other align
\end{align*}
explanation ...
- 535
29
votes
2
answers
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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 ...
- 1,501
28
votes
6
answers
13k
views
Multiline equation with LHS alone on first line?
I would like my multiline equations to look like this:
Left-hand-side of my equation
= right-hand-side number 1
= right-hand-side number 2
= etc.
I know there is a simple way to do this, ...
- 1,169
28
votes
1
answer
66k
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 ...
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votes
2
answers
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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*...
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27
votes
3
answers
38k
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 ...
- 815
27
votes
2
answers
39k
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Too much white space when using the align-environment
Consider the following example:
\documentclass{article}
\usepackage{amsmath,amssymb}
\begin{document}
\begin{align}
\prod a+bm && \text{is a square in} && \mathbb{R}\\
...
- 1,707
27
votes
1
answer
208k
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How to left align a set of equations
I wanted to left align a set of equations. I've tried the solution provided in
aligning to the left.
It worked. But, I wanted to have a single equation number for the entire flalign in order to refer ...
- 373
26
votes
3
answers
121k
views
How can I center an equation inside an align environment?
This is basically the setup:
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{align}
a &= b + c\\
a &= b + c\\
\center{a = b + c \quad a = b + c}
\end{align}
\end{document}...
- 1,559
26
votes
5
answers
122k
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Basic: How can I stop centering a text?
I'm starting with LaTeX and have a basic question regarding formatting of paragraphs. I wanted to caption an equation mid text, but I couldn't find any convenient way without the equation floating ...
- 375
25
votes
2
answers
180k
views
Aligning using flushleft and flushright
I am trying to create one column to the left side by side with another column to the right. The column to the left is labeled "Examples of like terms:" and the column to the right is labeled "Examples ...
- 281