{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.

learn more… | top users | synonyms

2
votes
3answers
283 views

How to align some lines under {align*}

I usually use \begin{align*} and \end{align*} to align some texts. Here is a special case I would like to realize: abcdefghijklmn hijklmn opqrstuvwxyz hijklmn There are 2 rules: 1) I want to ...
1
vote
2answers
1k views

Right Align Equation Number with hfill in Custom Environment

I have a couple of custom environments that I want to be able to use \hfill to right align the last column (similar to what {align} environment does with equation labels}. I attempted to use \hfill ...
2
votes
2answers
2k views

alignment of text between 2 lines in align*

I have this: \begin{align*} &f(1) = -11 & &\mbox{while q satisfies} &q(1) = 11,\\ &f(-2) = 20 & &\mbox{} &q(-1) = 20 \end{align*} which puts the text "while" ...
6
votes
1answer
5k views

Using align in beamer with overlays

How can I get the align environment to play nicely with beamer overlays? As a simple example I would like \begin{align*} a = \frac{bc}{c} \end{align*} on the first overlay and then ...
1
vote
1answer
464 views

Alignat issue - extra space in one line

My code looks like this: \begin{alignat}{2} \theta^2&\equiv\frac{2m a^2\epsilon}{\hbar^2},\ \lambda&\equiv&\theta^{\frac{2p}{p+1}}\frac{E}{\epsilon},\\ ...
4
votes
1answer
1k views

Hyperref and nonumber/notag in equations:

When compiling my text document, I get the following warning: [5] [6] [7pdfTeX warning (ext4): destination with the same identifier (name{equ ation.2.0.10}) has been already used, duplicate ignored ...
5
votes
2answers
358 views

How to produce aligned math with an extra symbol on the left.

In school, our teacher requires us to put a ⇔ sign on the left of our equations, when we do a tranformation on the equation. Usually, I use an align context to format multiple transformations of an ...
0
votes
0answers
383 views

Multi-column formulas using align [duplicate]

Possible Duplicate: Two column align environment with one line spanning both columns I am new to the amsmath package, and I am using alignat to write a long proof, composed of a number of ...
13
votes
2answers
4k views

Two column align environment with one line spanning both columns

Is there a good/correct way of making an align environment with one line spanning multiple columns? At the moment I'm using a hack like the following, but I feel that it's probably not the best way. ...
0
votes
2answers
2k views

The argument of foo has an extra }.

I'm trying to write a command that does, effectively, an \fbox in something like an align environment. The following code works: \usepackage{etextools} \makeatletter ...
3
votes
2answers
383 views

Macro to allow for alignment points within its argument

I would like to have a macro that allows for alignment points inside it. As a specific example, I would like to be able to say: \begin{align*} a &= b\\ \bracr{c &= d} \end{align*} ...
12
votes
1answer
11k views

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 ...
16
votes
3answers
28k 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*} ...
1
vote
1answer
160 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
308 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^* ...
20
votes
2answers
7k 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 ...
47
votes
3answers
23k views

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 + ...
9
votes
2answers
4k views

Mix align and enumerate

Is it possible to mix align* and enumerate, for example I want to TeX something like this (item a) and d), b) and e) and c) and f) should be aligned) a) x^2 + y^2 = 1 b) a + b = c c) r-x = y+z d) f ...
7
votes
1answer
736 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) ...
18
votes
2answers
7k 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 ...
11
votes
3answers
4k views

Left-justify with align on “=” in align environment

I searched the tex.stackexchange archives for an answer to this question but couldn't find one. I assume it's a common question, however. I often want to align text similar to the poly environment in ...
11
votes
6answers
606 views

Suppressing = on a line in the align environment

How do I produce the following in align environment? \begin{eqnarray*}& & abcd \\ &=& defg\\ &=& hijk \end{eqnarray*} I try \begin{align*}& abcd \\ &= defg\\ ...
11
votes
1answer
2k 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 ...
21
votes
4answers
1k 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 ...
7
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? ...
6
votes
3answers
2k views

Using tables to typeset proof - how to align equal signs?

I'm a student teaching myself to use LaTeX (and related tools) to type up my homework. It's going great, and I'm already very happy with what I've been able to do so far. Though, I have questions. ...
15
votes
5answers
7k views

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 ...
15
votes
3answers
1k views

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 ...
9
votes
1answer
9k views

aligning split equation

I am new to Latex ;) I split my equation like this: \begin{equation} \begin{split} \tilde{m}=P\tilde{M} \\ \quad = K(R^1R^2R^3t) \begin{pmatrix} X \\ Y \\ 0 \\ 1 \end{pmatrix} \\ \quad= ...
11
votes
5answers
11k 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} ...
5
votes
1answer
5k views

How can I flush left text in the align environment?

I have the following code: \begin{align*} m^+\cdot k^+ &= m^+\cdot k+m^+ &\text{by M2}\\ &= m\cdot k+k+m^+ &\text{since $k\in B$}\\ &= m\cdot k+(k+m^+) \\ &= m\cdot ...
8
votes
1answer
1k views

Is it possible to use \begin{align} in an inline math mode with \displaystyle?

Is it possible to use \begin{align} in an inline math mode with \displaystyle?
1
vote
1answer
327 views

How to avoid `&` conflict when using `\begin{align}` in a tabular cell?

Minimal CODE \documentclass{article} \usepackage {% array, calc, amsmath, longtable, varwidth% } \newsavebox\TBox \newcolumntype{B}[1] {% @{}% ...
2
votes
1answer
458 views

Match spacing of align in array environment

To typeset some displayed equations, only the array environment was powerful enough. However, the spacing of the array environment doesn't match the spacing of the align environment. How do I set ...
30
votes
3answers
8k 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) \\ ...
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 ...
13
votes
1answer
4k 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 ...
13
votes
4answers
8k views

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} ...
5
votes
2answers
310 views

Equation tags for parts of alignments

Consider the following example: \documentclass{article} \usepackage{amsmath} \begin{document} \[ 1+2=3 \implies \left\{ \begin{aligned} &a+b=c, \\ &x=y+z. ...
9
votes
2answers
560 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 ...
11
votes
1answer
3k 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 ...
13
votes
3answers
11k views

columns/alignment with itemize

I'm trying to make alignment points in a list environment. The following code gives me an error, but it almost compiles to what I want, just missing the bullet points. I must be misunderstanding ...
3
votes
2answers
682 views

Expand tabular/array to page width

I recently have had the need to make a math array or a tabular expand to fill the page width. The effect I am trying to achieve is that for one line on the page, half is aligned at the left, and the ...
4
votes
2answers
938 views

Centering a \noalign section

I'm trying to format a list of steps to solve a quadratic equation. I have it so that it is aligning correctly for each of the math steps, but now I want to add some headings. This is what I have so ...
8
votes
3answers
9k 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 ...
3
votes
1answer
2k views

LyX AMS align environment justification/ horizontal alignment

I'd like to know how to justify individual columns in the AMS align environment. In the matrix environment, the Table toolbar buttons are active, but not inside the AMS align environment.
10
votes
1answer
13k 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 ...
3
votes
1answer
2k views

How can I create a multiline split inside of a radical inside of an array environment?

I have an align like this: \begin{align*} \sigma &= \sqrt{\sum_x \left[ (x-\mu_x)^2\mathbf{f}(x) \right] } = \sqrt{\frac{1}{10}\sum_x (x-\mu_x)^2 } \ &= \sqrt{\frac{1}{10}( (0-.45)^2 ...
9
votes
1answer
8k views

Vertical space before and after align environment

I am wondering if it is possible in LaTeX to generally adjust the spacing before and after math in the align environment from amsmath. From the Mathmode-guide (by Herbert Voss) I gather that ...