{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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3
votes
2answers
255 views

Aligning tikz picture within text

I want to align my tikz within a text. A sample can be seen at the second picture in the following link: Image courtesy from http://www.echoecho.com/htmlimages08.htm This is my trial: ...
3
votes
2answers
5k 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} ...
3
votes
2answers
4k views

alignat problem

Whenever I try to use the alignat environment, it doesn't seem to work on my computer! I tried the following simple code (my file had \usepackage{amsmath}): \begin{alignat}{3} \min \quad x_1 ...
14
votes
7answers
1k views

Aligning polynomial terms

In LaTeX align, I'm struggling to align polynomial terms and assume there's an easy way to do it. But I cannot find the simple/elegant solution. What I would like is something like this: x1 + x2 ...
10
votes
4answers
175 views

Aligning numbering in a system of equation so it's centered

In the following code ... $\begin{cases} 2y+4x=9 & \text{(I)} \\ 3x-2x=10 & \text{(II)} \end{cases}$ ... I want the (I) to be centered above (II). Right now they are aligned above each ...
10
votes
1answer
2k views

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 ...
10
votes
2answers
661 views

Horizontal alignment within an equation using Tikz

I am trying to center horizontally the first terms of a system of equations inside the alignat environment. I don't know if Tikz is the right way to go, but as I might have to add some other ...
9
votes
2answers
244 views

Compute remaining horizontal space in align environment

I use align* often and sometimes it is preferable to add text to the right hand side of an equation instead of using \intertext, or \shortintertext, which tends to interrupt the math flow. This is ...
9
votes
5answers
2k views

How to subtract two equations?

I am trying to subtract one equation from another but I can't get it to display the way that I want. This is what I have right now. \begin{align*} &y&=2x+5\\ -&&\\ ...
9
votes
1answer
8k 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 ...
8
votes
3answers
178 views

Align matrices problem

I have an equation of matrices and I want to align the dimensions of the matrices below the equation of matrices. However, I produce something very ugly. Can someone advise how to make it look better ...
8
votes
2answers
178 views

Glossaries in Align Environment

Using glossaries commands in align environment seems to screw up the tag alignment. How can I use gls{...} commands in align environments without the tag position being altered? Consider the ...
8
votes
1answer
133 views

How to avoid this undesired horizontal space?

In the following output, why do I get the undesired space before the (, and how to get rid of it globally? Here is my code: \documentclass{article} \usepackage{amsmath} \begin{document} ...
8
votes
2answers
2k views

Label one line in a begin align*

I have the following block of TeX: \begin{align*} m_n^+ = \dfrac{1}{n}\sum\limits_{k=N+1}^{n} =& \dfrac{1}{n}\sum\limits_{k=N+1}^{n}\left(a_k-L+L\right) \\ ...
7
votes
3answers
426 views

Aligning different parts of an equation with certain spots in the line above

I am trying to get certain parts in the second line of an equation to line up with certain parts in the first line. For example, X=AAA+BBB+CCC = a + b + c where here I am wanting the lower-case ...
7
votes
2answers
2k 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
2answers
64 views

Place table based on position of column break

I have a table with two columns of different widths. I want to place my table in my page such that the line between the two columns falls on the center of the page. If the columns were the same size ...
6
votes
2answers
614 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) = ...
6
votes
3answers
296 views

How can I align two split environments at the equal signs?

\documentclass{scrartcl} \usepackage[latin1]{inputenc} \usepackage[T1]{fontenc} \usepackage[english]{babel} \usepackage{amsmath, amsthm, amssymb} \usepackage{mathtools} \begin{document} ...
5
votes
2answers
292 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. ...
4
votes
2answers
373 views

proof format 2 columns [duplicate]

Possible Duplicate: How to correctly format (and align) a LaTeX proof? In my proofs I would like to have justifications of each step to the side of the numerical manipulation. For instance ...
4
votes
3answers
326 views

Alignment in multiple locations of a single equation based on first line

I want to align a multi-line equation so that it basically looks like this: a = (b + c + d + e) f = g The requirements of this alignment are: The equal signs should be aligned. The beginning ...
3
votes
1answer
171 views

Placing a tikzpicture next to an align

I have a tikzpicture with an accompanying explanation in a math align environment. The tikzpicture is small enough that I'd like the explanation to appear next to (specifically, to the right) the ...
3
votes
1answer
2k views

How can I create a multi line 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 + ...
2
votes
1answer
106 views

Equation Number Positioning in Align Environment

How do I control the space between the equation number and the right margin in the align environment?
0
votes
0answers
34 views

Multi-line brackets in align [duplicate]

Possible Duplicate: How to make \left, \right pairs of delimiter work over multiple lines? The following code (from the official User's Guide for the amsmath Package) works: ...
11
votes
2answers
764 views

Problems with alignment of sequences

I want to align two sequences: a_1, b_1, c_1, d_1, e_1 etc. a_2, b_2, c_2, d_2, e_2 etc. here's what I wrote \begin{align} \notag &a_1,\ &b_1,\ &c_1,\ &d_1,\ &e_1\ ...
8
votes
1answer
116 views

Underbrace multiple math lines

I have to underbrace multiple lines in an align-environment with one brace. Meaning something like \begin{align*} A ={}& B + \underbracemultiline{C + D + E \\ & + F + G \\ & ...
8
votes
1answer
141 views

Why does the `&` reset grouping?

In this answer, I used \tikzmark to mark the extent of a typeset piece of text, so I could draw changebars next to it. But it initially seemed that the changebars "disappear" with math-mode content. ...
8
votes
2answers
11k views

Big \sum instead of small \sum in array environment

\begin{align*} \begin{array}{c} \min \: A = \min \: \sum_{i\in B} C_i \\ \\ \min \: D = \min \: \sum_{i\in B} \pi_i \cdot F_i \end{array} \end{align*} See http://i.stack.imgur.com/TFIfY.png for an ...
7
votes
1answer
112 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
646 views

alignment problem

I have the following: \documentclass{article} \usepackage{nicefrac} \usepackage{amsmath,amssymb} \begin{document} \begin{align*} f_X(x)&=\frac{1}{2 \pi} \exp ( -x^2/2 ) &\forall x \in ...
7
votes
2answers
264 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 ...
6
votes
1answer
106 views

Long formula in align environment

Usually, if I have a very long formula, I will use two lines in the align environment and \qquad to space things out nicely. For example, \begin{align*} % First line \rho\left(\frac{\partial ...
6
votes
2answers
853 views

How to edit the length of a color box?

I've typed my Resume and Im using a color box, with a line underneath it. However the grey colored box doesn't reach the full length of the page width. \documentclass[letterpaper,11pt]{article} ...
6
votes
1answer
335 views

\marginpar and \begin{align}

I want to use \marginpar directly beside a formula within a \begin{align} statement. I tried: \begin{align} E^2 \end{align} \marginpar{Not correct} but the 'Not correct' statement is written ...
6
votes
2answers
1k views

Underlining an equation in an align block

I'm trying to set up a system of equations and want to underline the last equation, but can't figure it out. Here's what I have: \begin{alignat*}{4} &F_n &- mg &- F_a\sin 32^\circ &= ...
5
votes
1answer
49 views

how to use conditional to define different \begin and \end environment at compile time

I just need little help on the syntax for this. I am using tex4ht, and I get an error when I use empheq for the align environment. I want to build this TeX file both in pdflatex and htlatex. I ...
5
votes
1answer
479 views

Automatic linebreak in align environment in macros

I have given a selfdefined command like \newcommand{\AND}[2]{\left(#1 \vee #2 \right)} which makes sure that I always give the correct number of parameters to my formula and which handles the ...
5
votes
1answer
3k views

Automatic equation numbering in LyX

I would like to create automatic numbering of equations in LyX. when I entered \renewcommand\[{\begin{equation}} \renewcommand\]{\end{equation}} for the "equation" environment it worked. However, ...
5
votes
1answer
1k views

Why does this error keep popping up even though I clearly fixed it?

This is the code I have: \begin{align} \vec{l} \cdot \vec{n} & = \left \langle 1,2,3 \right \rangle$ \cdot \left \langle 3,-3,1 \right \rangle \\ ...
5
votes
3answers
256 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 ...
5
votes
2answers
314 views

Size of the delimiters when the equation is split in an align environment.

The following code does not work: \begin{align*} \left \| x \mapsto \sup_{(y, t) \in \Gamma_x^{(A, a)}(\gamma)} & \int_{\R^d} M_{t^2}(y, z) 1_{N_\tau^c}(y, z) |f(z)| \, \d z \right ...
4
votes
2answers
1k views

Equation: How to create nested/multiple cases in LaTeX to align the qualifiers

I am having trouble with a particular equation as the cases are nested within a case. It would also be cool if I could align the qualifiers. I tried to post an image of the equation but I could not ...
4
votes
2answers
178 views

How to align equation items below their =

How is it possible to sort equations align with their = like this: a*b*c = d*e*f g*h = i*j k = l*m*n o*p*q = r I've seen it before but I don't know how to find that!
4
votes
1answer
709 views

How can I use align environment in conjuction with iopart.cls class?

I would like to use align environment over eqnarray for typesetting my equations. However the publisher forces to use the iopart.cls as the article class file which, as they mentioned, is incompatible ...
4
votes
2answers
375 views

Using aligned and align without amsmath

I am currently working on a proceedings paper, and have realised after finishing it that only specific packages are permitted - one of which is not amsmath. As a result, many of the nice equations ...
4
votes
1answer
647 views

Aligning equations with align*

I wanted to align a set of equations to left. I found on the Internet that you can do it easily with align* environment. I found it here: http://en.wikibooks.org/wiki/LaTeX/Advanced_Mathematics So ...
4
votes
3answers
313 views

How to right-side annotate a bracketed-together set of items in cases environment?

How to right-side annotate a bracketed-together set of items in the align environment, cases sub-environment? E.g. how to put an annotation such as "(Fermat)" where the following code would put a ...
4
votes
1answer
946 views

I used eqnarray ignorantly and now must change all to align.. any solutions?

Other than manually going over all the dozen plus instances where I ignorantly used eqnarray must all be changed to align. I first tried doing a finad replace all and replaced align, and then, for ...