{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.

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Spacing of \multline inside align (i.e. \multlined)

Related with How can I use multline within an align environment?. Consider this document: \documentclass{minimal} \usepackage{amsmath,mathtools} \begin{document} \begin{align*} & ...
8
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1answer
175 views

Switching from equation to align changes horizontal width

I am puzzled by why changing from an equation environment to an align environment should change the horizontal width of my equation. Below I provide an example. Sorry, it is not a minimal working ...
8
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2answers
477 views

Revtex's tensor macro interferes with nested amsmath split and align environments

I've encountered a strange collision between RevTeX and AMSLaTeX. If I nest a split environment inside an align environment, it works as it should, but then the next time I use the RevTeX \tensor{} ...
8
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1answer
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Tabbing for math mode?

I'm looking for something synonymous to tabbing, but for math mode. I read that alignat* should do the trick, but this behaves differently it seems. For example: \documentclass{article} ...
8
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1answer
541 views

Spurious horizontal space in the aligned environment

If you compile what's below, you'll observe a slight horizontal misalignment between the equations of aligned versus align. Is there a way to avoid that? \documentclass[fleqn]{book} ...
8
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1answer
274 views

Align successive equations through the entire document

I am fairly new to TeX and need to create my math assignment with TeX. I have succeeded aligning all my calculations with the use of \begin{align*} and \intertext{}, however in my document i have ...
7
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3answers
2k views

alignat makes 3 good alignments and 1 bad

I'm having a problem with the alignat environment. This code: \begin{alignat*}{9} &X_{12}&+X_{13}& & & & & & & &=1 ...
7
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1answer
36k views

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 ...
7
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4answers
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Aligning of equations within derivations

Okay, so I have the following derivation so far in my latex document: \documentclass[a4paper,oneside,11pt]{report} \usepackage[english]{babel} %francais, polish, spanish, ... ...
7
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2answers
3k views

Highlight an equation within an align environment with color option

I'd really like to do exactly what's being asked for in this question: Highlight an equation within an align environment, but with the ability to change the color when I call it, so that I could have ...
7
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3answers
469 views

How to break long equations while keeping alignment?

I have the following long equations: \documentclass[]{article} \usepackage{amsmath} \begin{document} \begin{displaymath} \begin{aligned} (\chi_1|\chi_1) ...
7
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2answers
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Equations and defining equation variables

I have a main equation that should be numbered and now I want to define the variables of the equations which may contain another set of equations. For example please have a look; code: \begin{align} ...
7
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2answers
448 views

Workaround for align without using amsmath

I'm preparing a manuscript for a journal that demands a style file (copernicus2.cls) that's not compatible with amsmath. I want to display some aligned equations, but the lack of amsmath means I can't ...
7
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3answers
322 views

How can I align this equation?

I want to align this equation. I tried \documentclass[12pt,a4paper]{article} \usepackage[utf8]{inputenc} \usepackage{amsmath} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{fourier} ...
7
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2answers
2k views

Why does aligning equations not work here?

\documentclass{minimal} \usepackage{amsmath} \newcommand*{\op}[1]{\operatorname{#1}} \begin{document} \begin{align*} \noalign{$\quad \op{f} * \op{r} = \op{c}_{\op{f}*\op{r}} (x_1,...,x_k) = ...
7
votes
2answers
368 views

How to stop fractions in display equations from running into each other?

Is there some standard way to create multiple display equations like the following without having to use: \renewcommand*{\arraystretch}{2} (so that the two rows in the second equation don't get ...
7
votes
2answers
652 views

How to split text within align

The text is too long and would like to split it in two: Any help please! \documentclass{article} \usepackage{amsmath} \begin{document} \begin{flalign*} \textit{K}^{k,r}_{j}& : \text{The ...
7
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2answers
4k views

Subequation aligning using matrix

When I use multiple matrix equations in subequation, I am doing it as in the code snippet. However, when I want to align the equations with respect to equal sign, = (commented in the code), I am ...
7
votes
1answer
365 views

Breaking lines in equations

I have an equation that is too long. It gets cut off, so I have tried to modify it with the split environment inside an equation environment: \begin{equation} \begin{split} & I_{ribbon} = ...
7
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2answers
6k views

Combine itemize/enumerate list and align environment

I have 2 parts (i) and (ii) that I am trying to write out, but I can't seem to get the (i) and (ii) it look nicely, i.e. itemised. I tried using the \begin{enumerate} command but it doesnt seem to ...
7
votes
1answer
240 views

Why don't these functions align perfectly with uniform spacing?

Thanks for the help. I don't see why the functions aren't aligning perfectly with uniform spacing. \documentclass[11pt]{article} \begin{document} \DeclareMathOperator{\csch}{csch} ...
7
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3answers
756 views

Aligning vdots with terms in a system of equations

I am attempting to write a system of linear equations that looks like this: A_{11}x_1 + A_{12}x_2 + \cdots + A_{1n}x_n = y_1 A_{21}x_1 + A_{22}x_2 + \cdots + A_{2n}x_n = y_2 \vdots \vdots ...
7
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2answers
166 views

Align mathematics equation in a box

I have the following code of maths equation in a box : \begin{framed} \begin{align*} &C_\star \rightarrow E_\star : &x=3\dfrac{5\phi^2+24\phi+12v+24}{\phi^2}, ...
7
votes
2answers
163 views

Check if in an align* environment

I want to use different styles of matrices if TeX is in an align* environment or in a normal math environment. I already found a solution for checking if it is in math mode (\ifmmode) but not ...
7
votes
2answers
776 views

right align in align environment

I use a align* environment and on one line I have a very long equation which does not contain into a line. Thus for this line I would like to have the same behavior as a multline environment, that is ...
7
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3answers
315 views

Center a column in align

I have the following type of code in my document: \begin{align*} (-m)+m & \stackrel{\mathrm{Ax 1.1 (i)}}{=} m+(-m)\\ &\stackrel{\mathrm{Ax 1.4}}{=} 0 \\ I want to align on the = ...
7
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2answers
239 views

Evenly spacing aligned matrices with different elements

I have 8 vectors that I display as bmatrix in an align environment as follows: But as you can see, the first vector is slightly thinner, making the rest unaligned aswell. How can I make the first ...
7
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1answer
746 views

How do I draw a circle around a term in an align* equation?

Here's what my equation looks like; it's in an align* environment: I want to put a circle around $\varepsilon \frac{dL}{d\varepsilon}$ and everything else unchanged. Q: How do I draw a circle ...
7
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1answer
293 views

Arabic with Latin mathematical notation

I would like to write math formulas to look like the picture below: I have the following segement of code, for example \documentclass[10pt,a4paper]{report} \usepackage{amsthm} ...
7
votes
3answers
233 views

How to horizontally align rotated text in a table?

I am trying to horizontally align text that has been rotated in a table. I want the rotated "Lorem Ipsum" and the rotated "Lorem Ipsum & Lorem Ipsum" text to be horizontally centered in the cell. ...
7
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2answers
2k views

Align equations with conditions

I am using the following equation with boundary conditions, I would like to position the equation centrally aligned and would like to keep the boundary condition to the right. But the equation is a ...
7
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2answers
89 views

Whitespace around characters

I need to wrap some of the characters with whitespace so that the terms align correctly $\begin{align*} x = 1 + 2 + 3 + 4 + \cdots + n \\ x = n + (n-1) + (n-2) + (n-3)+\cdots+ 1\\ \cline{1-2} 2x = ...
7
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2answers
97 views

Cases alignment and displaystyle for all environments

please consider following "minimal" code: \documentclass{article} \usepackage{amsmath}% http://ctan.org/pkg/amsmath \begin{document}\begin{align*} (p's_y)(z)&=(ps_xs_y)(z)=\\ ...
7
votes
2answers
111 views

How to get a nice alignat of this equation?

I want to align this equation. I tried \documentclass{article} \usepackage{amsmath} \begin{document} \begin{alignat*}{2} A\cdot \left(A^{n-1}+A^{n-2}\cdot B + \cdots + B^{n-1} \right)&=& ...
7
votes
1answer
168 views

Formula label outside of formula

I want to label a block of equations like that: The "AB" should not inflict the central alignment of the formula. I saw it a lot, but do not succeed on my own. Do I need to build boxes? I used the ...
7
votes
1answer
648 views

Scaling down all the equations using one single command?

I am about to submit an article with lots of equations in there (defined in both equation and align environments and I also have lots of inline math of course). There is a maximum page limit for the ...
7
votes
1answer
673 views

Align-environment: Align on the left side

Why doesn't the following code align the two equations in the middle? It does only if I remove the alignment on the left. \begin{align*} &ABC &= ABC - AB\\ &ABCD &= ABC - ...
7
votes
4answers
178 views

Multiple alignments within align environment

My minimum working example: \documentclass{report} \usepackage{amsmath} \begin{document} \begin{align} \dot{x}_2 = \dot{x}_{2,0}&+\frac{\partial f_2(x_1)}{\partial x_1} \bigg|_{x_1=x_{1,0}} ...
7
votes
1answer
1k views

Different space between \align and \equation

Why produce the align and the equation environment different space between the text. And what can I do, that it have the same? \documentclass{article} \usepackage{amsmath} \begin{document} Long ...
7
votes
1answer
76 views

How many times is “align” processed?

Consider the following MWE which writes the word "Cat" to a file. \documentclass{article} \usepackage{amsmath} \begin{document} \newwrite\datei \immediate\openout\datei=Beispiel.txt \begin{align*} ...
7
votes
2answers
329 views

Passing an argument with the alignment operator (&) to a macro within another aligned environment

I am trying to write macros for quickly formatting matrices in math mode. Here is a simple, working example: \documentclass{article} \usepackage{amsmath} ...
7
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1answer
152 views

Problem with \index in align environment

Please compile the following MWE. As you will then see, the typesetting of $\mu^{\otimes\downarrow n}$ in the index is strange! \documentclass{article} \usepackage{amsmath} \usepackage{imakeidx} ...
7
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1answer
3k views

More sophisticated page breaks within aligned equations

This is my current method of allowing page breaks between my aligned equations {\allowdisplaybreaks \begin{align*} left &= right1 \\ &= right2. \end{align*}} It works, but it doesn't ...
7
votes
3answers
93 views

How to justify steps (e.g., citing numbered equations) in a displayed chain of equations

I have a chain of equations in AMS align environment in LyX, and I want to cite numbered equations as justification for some of my steps in the chain (see the picture). I don't know if there's a ...
7
votes
1answer
173 views

Automatically reference a set of equations in align

Is there a way to automatically refer to a set of equations in an align environment? E.G. I would like this to read "From Eqs.(1-3), we can clearly see..." \documentclass{article} ...
7
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1answer
1k views

How to get width of equation

If I want to know the width of a text I use \settowidth{\MyLength}{bla}. Is there something similar for equations? More specifically I have \begin{align} a & b & c & d\\ c & d ...
7
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1answer
176 views

Box some equations inside align

I'm trying to make something like this: But I have just can't figure out how. I have tried with empheq and tikz, but I can't get it to work with only some boxes inside align. I have also tried with ...
7
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2answers
852 views

Centering the align environment on the middle column

I have a set of aligned equations that I would like to provide an \implies for down the left hand side. I used this originally: \begin{align} (x-1)^2 &= -1 \\ x-1 &= \pm i \\ ...
7
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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) ...
6
votes
3answers
279 views

About alignment of mathematics formulas

How can I implement the alignment like in the following image? Because the usual \begin{align*} and \end{align*} command can not work, so I hope you can help me! Thanks! Wait for your elegant ...