{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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13
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2answers
6k views

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 ...
5
votes
1answer
5k 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, ...
10
votes
2answers
829 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 ...
4
votes
1answer
895 views

What's wrong with minipage(table(minipage(align))) arrangement

In an attempt to show the code and the output side by side, I have used a table inside a minipage. The table entries are two minipages and one contains an align environment. Having the align ...
19
votes
2answers
12k views

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 ...
5
votes
2answers
476 views

Leftbar in align environment

We have to mark lines in a LaTeX document by vertical lines in the left margin of the site. An excellent solution outside of align environments is the leftbar environment (framed package): ...
0
votes
1answer
559 views

\eqalignno compiling question in MiKTeX

I'm a TeX/LaTeX newbie. I would like to generate a .png using dvipng for the below equation. $$\eqalignno{\overline {Z_{w,h}^{(LDGM)}} =&\sum\limits _{e=0}^{t} \left [{{ 1}\over { t\choose ...
5
votes
1answer
2k 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
1answer
1k views

! Argument of \@Aboxed has an extra }

I have a problem using \Aboxed in the following align*-environment: \begin{align*} \omega(\sigma_{ij}) &\equiv 1 - \left(\frac{27J_3}{2\sigma_e^3}\right)^2 \\ & = \omega(L) = 1 - \frac{\left( ...
19
votes
1answer
119k views

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 ...
2
votes
1answer
1k views

Multiple aligning symbols

I would like to do the closest thing there is to opening an align* environment inside another align* environment. In other words: it would be great if there were an environment, call it Align, that ...
5
votes
1answer
249 views

Label a block or systems of equations with one label [duplicate]

Possible Duplicate: How to get only one vertically centered equation number in align environment with two equations I have a big system of equations which I want to label as one block. I do ...
4
votes
1answer
731 views

Math environments in tables with > and < preamble

I'm trying to put a \begin{align*} and \end{align*} for every entry at columns 2 and 3 of my table. But I'm getting errors that seem to say my environment markers are mismatched. I'm sure I've got my ...
3
votes
1answer
193 views

Define an align environment that always aligns to the first equal sign

I noticed that 98% of the times I use align or aligned I place the & just before the first = of each line. Is there a way to define a new environment that automatically aligns equations to the ...
1
vote
1answer
9k views

Runaway argument

The following code: \begin{align*} \lim_{u\rightarrow\infty}\frac{\psi(u)}{\overline{F_I}(u)}&=\left(\frac{\rho}{1+\rho}\right)\sum_{n=0}^{\infty}n(1+\rho)^{-n}\\ ...
3
votes
1answer
505 views

mdframed package + align gives extra vertical space

I think I may have stumbled upon a bug in the mdframed package. I have an mdframed environment with just one align environment inside it. Consider this minimum working example: ...
1
vote
2answers
1k views

How to vertically align multiple equations with text underset?

How do you vertically align equality signs when one of them has some text underset? My solution is: \documentclass{article} \usepackage[T1]{fontenc} \usepackage[american]{babel} ...
9
votes
3answers
16k views

Centering in the \align* environment

I'm using the \align* environment from the amsmath package. How can I center one of the lines inside the environment? In the following example, I want to the \vdots to be centered, instead of ...
10
votes
1answer
1k views

Aligning sub-equations within align

Update: How do I align both the \sum signs and the = signs in the last two equations? I have updated the picture. Original Question: When I use the following code: \begin{equation} \begin{split} ...
0
votes
0answers
41 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: ...
12
votes
2answers
7k views

How do I put a side brace around several lines in the align* environment?

I would like to put a side brace around several lines in the align* environment, as shown in the comments in the code below: \begin{align*} left side & = right side \\ left side & = ...
18
votes
1answer
2k views

Automatic line break in alignat

Consider the following example from http://tex.stackexchange.com/a/12782/4011 \documentclass{article} \usepackage{amsmath} \newcounter{eqn} \renewcommand*{\theeqn}{\alph{eqn})} ...
3
votes
2answers
3k views

Alignement in columns and spacing between columns of an equations environment

(Too) Long ago, I had some problems with some equation. I wanted them to look like this (this is how they looked in LyX), but when compiled they looked like this: . What botheres me compared to ...
8
votes
1answer
572 views

Footnote from intertext

I want to be able to send footnotes from intertexts I use within align. Is there an easy way to accomplish this (say using a package)? For example, I am a little teapot \begin{align} this ...
4
votes
1answer
5k views

How to force left alignment in an aligned array of formulas?

So I try \begin{equation}\label{eq2} \left.\begin{aligned} \Phi (z)=-\frac{{\rm 1}}{{\rm 2\pi}{i}} \int _{-\infty }^{+\infty }\frac{N-iT}{x-z} dx ,\\ {\rm \Psi }(z)=-\frac{{\rm 1}}{{\rm 2\pi }{i}} ...
5
votes
1answer
322 views

Access every cell of amsmath's align environment

I'd like to create an environment that basically behaves like amsmath's (v. 2.13) align environment, i.e. line numbering, \label, \tag, \intertext ... are available. Since I don't want to reinvent ...
11
votes
3answers
23k views

Using \gather and \align together

I'm very picky regarding alignment inside my proofs. What's frustrating me right now is that I have some lines that I want to be center-aligned (using \begin{gather}) and others that I wish to align ...
6
votes
2answers
7k views

Argument of align has an extra '}'

Okay, this was compiling just fine yesterday. I've since been making some changes, and now get the following error: ! Argument of \align has an extra }. <inserted text> \par l.85 f(t) = ...
6
votes
3answers
278 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 ...
0
votes
2answers
139 views

How to number an entire array environment with only a single number [duplicate]

Possible Duplicate: numbering few equations together I am currently using an align environment to write a system of equations. The code has the form: \begin{align*}\label{myEnv} %equation ...
6
votes
1answer
32k 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 ...
4
votes
2answers
683 views

Varying number of columns in multi-equation environment

Consider the following document: \documentclass{article} \usepackage{amsmath} \newcommand{\expr}[1]{\begin{pmatrix}x_#1\\y_#1\end{pmatrix}} \begin{document} \begin{equation} c = a \cdot b ...
11
votes
2answers
7k views

Putting equations in \intertext to annotate a proof

I'm trying to typeset a proof with Latex. When I do proofs, I like to alternate between a line of text, to explain each step, and the resulting equation. I also like to have the equations align at the ...
12
votes
2answers
12k views

Are \choose and \align incompatible?

I ran across a strange warning when trying to use the math command \choose inside the amsmath package's \align* environment: \documentclass{article} \usepackage{amsmath} \begin{document} ...
27
votes
1answer
34k views

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: ...
22
votes
1answer
5k views

What is the difference between \notag and \nonumber in align environment?

I use \notag or \nonumber in align environment but there seems no any difference when display. What is the difference between these two commands?
3
votes
3answers
1k views

Vertically Aligning Multiple Symbols in Each Row

In the following MWE, I want the \implies symbols to be aligned, and both \leq symbols on each row to be aligned (adding space between everything as necessary). How can I add & symbols in the ...
17
votes
2answers
11k views

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 ...
7
votes
2answers
425 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 ...
2
votes
1answer
866 views

Adding text over matrix in LaTeX

I am trying to accomplish this in LaTeX. j ⎡a b c⎤ |d e f| ⎣h i j⎦ so that the "j" is aligned with the center of the matrix. It seems like I can't use the \begin{align} ...
7
votes
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 ...
10
votes
1answer
441 views

What would be the appropriate technique for typesetting a “where” list of variable specifications after an equation?

I'm often finding I need to lay out an equation in a manner resembling the following source: \begin{align*} x = y + z \end{align*} where $y = $ the value of $y$; $z = $ the value of $z$. ...
14
votes
3answers
26k views

Two sets of aligned equations in two columns?

Say I have a set of equations: (1) \begin{align} wx&=u\\ wy&=v\\ w&=10 \end{align} (2) \begin{align} x&=u/w\\ y&=v/w\\ \end{align} How can I do the following: put (1) and ...
8
votes
3answers
868 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 ...
5
votes
1answer
1k views

Align environment: take exact control of tab position

I was wondering if it is possible to take control of the exact position of the tab in an align environment. Like so: \begin{align}[2cm] A &= x^3 + 14789\\ B &= f^6 \end{align} Which should then ...
19
votes
6answers
6k views

Multiline equation with LHS alone on first line?

I would like my multiline equations to look like this: Left-hand-side of my equation = right-hand-side number 1 = right-hand-side number 2 = etc. I know there is a simple way to do ...
31
votes
6answers
83k views

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 ...
4
votes
1answer
544 views

Align equation with a better method than {split}?

I've got the following code that I'm using and wondered if there was a way to get the minus sign (-) of the third term to align with the minus sign of the second term, or if there was a nicer way to ...
8
votes
2answers
9k views

Horizontal spacing after equation

I have the following snipped in my LaTeX document: \begin{align} \sum_{j=1}^{m}x_{ij} &= 1 \text{ for } i = 1,2,...,n \sum_{i \in P_k}x_{ij} &\leq 1 \text{ for } j = 1,2,...,m \text{; } ...
6
votes
2answers
5k views

Enumerate inside align

How can I get an enumerate inside an align environment? I want something like this: %... \begin{enumerate} \item test123 \begin{align*} \item x^2 & \text{ bla}\\ \item x^3 & \text{ bla2}\\ ...