{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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10
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2answers
12k views

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?
8
votes
2answers
3k views

Aligned multline

I want to show the derivation of a formula where I encounter long formulae. Unfortunately the derivation is very complex, so I have to show some intermediate steps. My problem is, that I want to mix ...
3
votes
0answers
34 views

Why does an extra line of space before \end{align} throw up an error? [duplicate]

I often add extra spaces in my TeX file for readability, and I find this error cropping up whenever there is an empty line before \end{align}. What is the reason for the error and is there a way to ...
0
votes
1answer
983 views

Spacing in multiline equations

Please help me to figure out how to produce with that: I have the following code: $$ gcd(0,0) = 0 $$ $$ gcd(u,v) = gcd(v,u) $$ $$ gcd(u,v) = gcd(-u,v) $$ $$ gcd(u,0) = |u| $$ $$ 2^{x^3} = ...
0
votes
1answer
888 views

remove italics from align

\begin{align*} P2P &- Peer-to-Peer Network\\ %..... \end{align*} I have a Abbreviation page in my PDF. For aligning all the '-' I am using align*. All the content inside align shows up in ...
1
vote
1answer
2k views

Equation numbering problem, `alignat`

When using the alignat environment I encounter a strange equation numbering problem. It's rather hard to describe, but here is an MWE. I describe the output below. \documentclass[]{memoir} ...
4
votes
2answers
217 views

I can't use & tabs in the `align` environment while using it inside a custom environment

I've got a custom environment made for problem sets, and it uses a tabular to align the question number and question body. When I try to use & to group parts of an equation together - like if I ...
9
votes
1answer
726 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 ...
0
votes
1answer
126 views

Where is the error that i can not run? [closed]

\documentclass[12pt,a4paper]{article} \usepackage{amsmath}\usepackage{amssymb} \textwidth=16.5cm \oddsidemargin=-0.10cm \evensidemargin=-0.10cm \topmargin=-1.0cm \textheight=24.5cm ...
1
vote
1answer
182 views

Latex equation positioning problem

\documentclass[12pt,a4paper]{article} \usepackage{amsmath}\usepackage{amssymb} \textwidth=16.5cm \oddsidemargin=-0.10cm \evensidemargin=-0.10cm \topmargin=-1.0cm \textheight=24.5cm ...
4
votes
1answer
648 views

Use of align for multiple alignments needing right-alignment

I am currently having issues with the display of this equation below. The code I have inserted is using align but I have also tried using eqnarray, (which has right-alignment but is deprecated), and ...
10
votes
2answers
523 views

Modify eqnarray to match that of amsmath's align

This is a follow-up question to \eqnarray vs \align. Sadly, some journals (and their accompanying document classes) still require the use of eqnarray to arrange a number of equations in a single ...
6
votes
2answers
260 views

Alignment between material inside and outside a cases environment

In the code below, I'd like to make the i=0,\ldots,n. line up, in the output, with the cases in the first part of the definition. Ideally, the full-stop would align with the semicolons and comma. ...
8
votes
2answers
630 views

Aberrant vertical spacing with {align} and friends?

Consider documents with the following preamble: \documentclass[12pt]{article} \usepackage{amsmath} Question #1. Why do we get bad alignment with the following code? \noindent ...
2
votes
1answer
2k views

change the color of an align environment

regarding this documentation ftp://ftp.dante.de/pub/tex/info/math/voss/mathCol/mathCol.pdf it should be easy to change the color of an align environment like this: \documentclass{article} ...
5
votes
2answers
2k 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 ...
14
votes
5answers
4k views

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 ...
5
votes
2answers
4k views

How to get align or similar equation environment to use the whole line instead of centering around the equality sign

I'm creating a Beamer presentation in which a line in the equation environment should fill the whole screen and should not only be centered arround the equality sign. I think this looks nicer and is ...
4
votes
2answers
1k views

Wrapping text within align

I am writing Flashcards for the upcomming finals. To describe the equations I use the align* environment like this: \begin{align*} x_+ &: \text{ Molenbruch von Enzymen, bei denen ...
4
votes
3answers
1k views

Inserting three minipages in the same line

I'm trying to insert three minipages, side by side, in a line, but I'm failing miserably. Here's what I've been able to do so far: % ...
5
votes
1answer
527 views

A piecewise function with fractions and without tiny text

I would like to create a piecewise function which includes fractions. But the solutions I have found so far squish the fractions in to tiny text that is nearly illegible. The cases environment ...
9
votes
1answer
158 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} ...
16
votes
1answer
9k 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 ...
5
votes
1answer
951 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 ...
6
votes
2answers
176 views

problem with align

i'm trying to typeset someting like this: \begin{align} f_{**p}(X_p,Y_p) = X_p(Y(f)) = \sum_{i,j = 1} ^n \alpha_i \beta_j E_{pi}(E_j(f)) f \end{align} short remark \begin{align} E_{pi}(E_j(f)) ...
3
votes
1answer
115 views

Spacing between align and list environement

How can I reduce the spacing between the align and the list environment? \begin{align*} {_C}\vOm=( 0, 0, 0 ) \end{align*} <=== THERE IS STILL SOME SPACING inbetween? ...
6
votes
1answer
7k views

Alternative to \text inside an align environment

Is there a way to write texts without resorting to using the \text macro every time I write something in the align enviroment? I am trying to write a proof and pretty much 90% requires me to write ...
6
votes
1answer
305 views

Breaking equation in align enviroment to put textwidth matrix in separate line

I have to put a textwidth pmatrix into an align environment. When using split, it destroys the centered alignment of the other equation. Pseudocode: \begin{align} \vec{a} &= \vec{b} + \vec{c} ...
3
votes
2answers
174 views

alignment and numbering of math formulas

I have 3 formulas which should be aligned at the = sign and numbered (1) to (3). Seems a simple task but trying both \being{equation} with \begin{split} and \being{align} did not work out. I alwasy ...
10
votes
2answers
6k 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) \\ ...
4
votes
2answers
880 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
3answers
1k views

Problem with fraction and align environment - “&” symbol

I am new in LaTeX, thus I need your help. I want to align the \leq symbol under the + symbol. The problem is that the + symbol is contained inside a fraction, therefore, the ...
5
votes
3answers
486 views

Equation numbering

Suppose that when we write an equation in the align environment and we break the equation in two lines. There is only one equation number. How can I place this number not in the last equation line, ...
6
votes
2answers
110 views

How to set some lines right aligned in the align enviroments?

I have try some code like this: \begin{align*} Q(R)&=\bi(R,R)\\ &=\bi(R_I+R_{\Rico}+R_W,R_I+R_{\Rico}+R_W)\\ &=\bi(R_I,R_I)+2\bi(R_I,R_{\Rico})+2\bi(R_I,R_W)\\ ...
6
votes
1answer
741 views

Subequations inside align result in too wide equation

I want to create subequations and allign them such that nice 'inquality constraints' arise. My current code: \begin{subequations} \begin{align} a & \le b & \le c \label{eq:constr1}\\ d & ...
1
vote
1answer
1k views

How to align middle-align text in a parbox?

I am trying to add a frame around a text which would be centered and vertically aligned to the middle of the box but I can only center the text. What should I do to align the text to the middle of ...
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} ...
8
votes
2answers
476 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{} ...
2
votes
1answer
2k views

How to handle too long equations?

I have some equations that don't fit in one line. In addition, they have different heights. I think it looks awful. \documentclass{report} \usepackage{amsmath} \begin{document} \begin{align*} ...
14
votes
4answers
696 views

How do I get this strange alignment?

I would like to get a nonstandard alignment in the following code: \begin{align} \text{First left hand side} & = \text{First right hand side} \\ \text{Second left hand side} & = ...
16
votes
2answers
2k views

How to align nested cases?

Please consider the code bellow: \begin{align*} function = \begin{cases} case1 &\mbox{if } n = 0 \\ \begin{cases} case2 &\mbox{if } n = 1 \\ ...
8
votes
3answers
2k views

Labeled linear program with labeled equations and wide objective function

Can anybody help me stating a linear program in latex with the following requirements? The LP itself shall be numbered on the left-hand side (although in the remaining document the equations' labels ...
1
vote
0answers
65 views

How to left align any LaTeX code? [duplicate]

Possible Duplicate: How to move the whole block of {align*} to the left? How can I make this simple code to appear left aligned? \begin{align} \frac{cos2A}{1-sin2A}=cot(45^o-A) \end{align} ...
1
vote
1answer
249 views

How do I typeset something like this (math - image below)?

I figured that that the exam class allows me to align the two parts of the lemma using the the \part command and also I could align the two lines of equation (3.11) using \begin{align*}, ...
6
votes
1answer
6k views

How do I left and right justify text within an align environment

I want to simultaneously have text left and right justified around an align environment. I'm able to do this, but my solution seems like a dreadful hack. I really don't want to prepend every line ...
7
votes
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) = ...
2
votes
1answer
242 views

Latex matrix not displaying right numbers

I've just started writing in latex to expose math problems to a forum. I am trying to display a matrix: \[ \begin{align*} \begin{matrix} 1 & -9 & 3 \\ 1 & 2 & -2 \\ -2 & ...
0
votes
1answer
208 views

exam class and align* environment [closed]

I wonder if there is a conflict between the align environment and the exam class. I have the following and it gives an error for \begin{align*} \documentclass[answers,11pt]{exam} ...
13
votes
2answers
2k views

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 ...
3
votes
2answers
319 views

Multilines aligned to describe a set notation

I'm trying to write a set notation in multiple lines, for example: This is my code to get it. \usepackage{amsmath} \begin{document} ... \begin{align*} Lookup &= \{\, \langle C, A.m, B.m ...