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.
626
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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
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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
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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
2
answers
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What is wrong with defining \bal as \begin{align}?
I'm trying to define two commands \bal and \eal instead of inserting \begin{align} and \end{align} in my document, but in the code below, I'll get some errors. What is wrong with it?
\documentclass{...
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votes
3
answers
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Using \left( & \right) around amsmath's align delimiter ("&")
I want to align equations (using the align environment from the amsmath package) inside matching \left( and \right) commands. For example:
\documentclass[a4paper,12pt]{article}
\usepackage{amsmath}
...
- 431
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 + \...
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51
votes
4
answers
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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
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
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
128
votes
8
answers
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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
17
votes
2
answers
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Enumerate formulas
I'm writing a math paper in LaTeX and for math formulas I'm just using $$math formula$$. Is is possible to numerate formulas? Or do I have to you use some specific commands such as align?
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13
votes
1
answer
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Spurious space above align environment at top of page/minipage
It seems that the align environment adds additional vertical space if it starts at the top of a page or minipage. Below are two pages, and two minipages (on Page 1), where the first page/minipage has ...
- 220k
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
7
votes
3
answers
14k
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Aligning equations with left and right comment
I'd like to align multiple equations below each other such that the central operator is always centered, but have a column for commenting on the right and a column for \iff-arrows and \Rightarrow-...
- 238
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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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votes
4
answers
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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}
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votes
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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=...
- 2,067
73
votes
1
answer
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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}...
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21
votes
1
answer
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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 "...
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20
votes
1
answer
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What's the right space to right the alignment of a right aligned align environment?
As Hilbert would have put it, had he lived in the TeX-era:
No one shall expel us from the Paradise that AMS has created.
and one aspect of that paradise is release from the tyranny of eqnarray by ...
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104
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
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
27
votes
1
answer
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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
16
votes
1
answer
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How to split and align equations when they are inside an enumerate environment?
How to make the first line of aligned equations sit in the same baseline as the bullet and make the equation left justified?
\documentclass{article}
\usepackage{amsmath}
\begin{document}
\begin{...
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25
votes
2
answers
14k
views
Highlight an equation within an align environment
I would like to define a command that puts a red box around an equation with yellow highlighting. I have the basics working pretty well. What I am unable to figure out is:
How to keep the alignment ...
- 220k
15
votes
3
answers
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views
newenvironment: error with \begin{align} and \end{align}
In the example below, an error is caused by \begin{align} and \end{align} but I do not see why:
\documentclass{book}
\usepackage{amsmath}
\newenvironment{subalign}{\begin{subequations}\begin{align}}{\...
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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
41
votes
5
answers
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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 ...
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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
20
votes
3
answers
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Aligning across 'aligned' equation blocks
I'd like to format two groups of equations such that all their equal signs line up and such that I can put a big brace to the right of each block to annotate that block. The last part is easily ...
15
votes
5
answers
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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}
...
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votes
1
answer
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Measuring align
From what I read it seems that align environments are processed twice: the first time for measuring, the second time for actual typesetting. My question is whether one can get access to these ...
- 235
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votes
3
answers
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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(-...
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votes
3
answers
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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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30
votes
3
answers
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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
22
votes
2
answers
16k
views
Align Equations Over Multiple Tabular Rows
I'm trying to set up a table with some equations in it, however I would like the equations on multiple rows to be aligned properly. So far I have
\begin{tabular}{cc}
\hline \multicolumn{1}{l}{Header ...
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votes
4
answers
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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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Numbering a set of horizontally distributed equations
Having different horizontally distributed equations inside an align environment, only lines are numbered, but not individual equations.
How can the left equations be numbered using subequations? ...
- 2,228
12
votes
3
answers
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\left and \right in equation across multiple lines [duplicate]
Possible Duplicate:
Left/Right across multiline equation
Could someone explain why I can't get the left and right commands to work correctly
code:
\documentclass{article}
\usepackage{amsmath}
\...
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votes
1
answer
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Environment aligned doesn't output first part in bracket
\begin{equation}
\begin{aligned}
[c\mathbf{v}+c'\mathbf{v}',\mathbf{w}]=&c[\mathbf{v},\mathbf{w}]+c'[\mathbf{v}',\mathbf{w}],\\
[\mathbf{v},c\mathbf{w}+c'\mathbf{w}']=&c[\...
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votes
2
answers
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Can I tab inside of align environment?
I currently have this ugly equation:
The green alignment is just like I want it. The Red one is what I would like to get, but I don't know how.
Here is my MWE:
\documentclass[a4paper]{scrartcl}
\...
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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 }...
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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 \\
\...
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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
24
votes
4
answers
9k
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Centering equations within alignat command
I want to centre the formula inside the equals. So far I have
\begin{alignat*}{2}
v_2(16)&=\frac{2}{5}[v_3(32)+v_3(8)] &&= 0, \\
v_2(4)&=\frac{2}{5}[v_3(8)+v_3(2)] &&= 1....
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votes
6
answers
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\overset and align environment: how to get correct alignment?
I'm using the align environment together with the \overset command to put some text over a relation symbol. Here is my MWE:
\documentclass{article}
\usepackage[T1]{fontenc}
\usepackage[utf8]{inputenc}...
- 887
21
votes
2
answers
9k
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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 ...
- 220k
20
votes
3
answers
5k
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How to make formulae take equal vertical space in the align environment?
Consider the following code:
\begin{align}
f_1(x) &= \frac{15x}{3} \\
f_2(x) &= 3x + 5 \\
f_3(x) &= 4x + 13
\end{align}
This produces three lines where the first line takes up more ...
- 1,965
18
votes
4
answers
48k
views
How to align multiple subfigures in a grid?
I have three images and I want to align them in the way that one image is above the other two. Here's an example:
How can I achieve this? For my other figures I use the subcaption package, but I am ...
- 365
13
votes
2
answers
3k
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Selective numbering of equations with align
I have an align environment with 5 equations. I want 3 of them numbered, and the other 2 not numbered. I understand that there's other posts on the issue of selective numbering of those equations that ...
user16208