{equations} is about the various environments to typeset displaystyle mathematics, e.g. equation and {align}. For general questions about mathematical typesetting use {math-mode}. Both tags are possible on the same question.

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9
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2answers
9k views

overset text over equal sign in in an Align environment

Look at the following example \begin{align} & x \\ \overset{\text{some long explanation}}= & foo \\ & = bar \end{align} what is the best way to get the equal signs ...
0
votes
2answers
184 views

How to align an equation reference (1) to the right

I have a centred equation and I'd like to place a (1) on the same line as the equation, but aligned to the right, so that I can refer back to the equation in future. What I have at the moment is: ...
2
votes
4answers
2k views

How to write long equation

I want to write the following equation in such a way that right align is possible. That is all right most elements are in same column. Here left align is done. \begin{eqnarray*} y_{0}&= ...
4
votes
3answers
7k views

amsmath - multiple labels in one equation

I would like to use multiple labels in the same equation when using amsmath. Basic latex already has this feature, but not amsmath, which seems to manipulate labels in complicated ways. Is it possible ...
8
votes
2answers
917 views

How to punctuate multiline equations?

This might be off topic, yet I wouldn't know where else to ask. I want to keep up with the good habit of punctuating displayed equations. For example I know the comma (,) is compulsory in Here, we ...
0
votes
2answers
7k views

Smaller \lbrace than expected [duplicate]

Possible Duplicate: How do I format this equation in LaTeX? \begin{equation} p_{GL}= \lbrace \begin{array}{@{} l c @{}} 0.59p_R+0.3p_G+0.11p_B & \text{p es un pixel del fuego} \\ 0 ...
7
votes
2answers
623 views

How do I format this equation in LaTeX?

I want to write this equation in Latex. Sorry, I don't know what's the specific name of this kind of equation. I know title is so general.
6
votes
1answer
7k views

Different spacing around equation and align

In my document, I use align and equation, depending on the length of the equation. They are spaced differently, as you can see on the picture below. I read that comments in the empty lines would ...
30
votes
3answers
36k views

Adding letters to equation numbers

I want to number use a equation and add a letter to the equation number such as: f(x) =a x and g(x) = b x (3.1.1a,b) That is e.g. using \begin{equation} ... \label{eq} ...
2
votes
1answer
344 views

Issue with subequation enviroment

I use the following code \begin{subequations} \begin{equation} \mid H(j\omega) \mid = \frac{\omega CR}{\sqrt{1+(\omega CR)^2}} \label{subeqn:amplitude} \end{equation} \begin{equation} ...
10
votes
2answers
975 views

Custom alignment of columns in align environment

I need to typeset two columns of equations, each row typeset with an equation number to the right as with an ordinary equation. The first column must be centered, and the second column must be ...
9
votes
2answers
2k views

Compact collapsing of equations and paragraphs

I want to duplicate the compact look of G. K. Batchelor's fluid dynamics book. Where a paragraph terminates such that the mathematical expression can collapse up into the vertical space of the ...
1
vote
0answers
70 views

Referring to a whole eqnarray [duplicate]

Possible Duplicate: numbering few equations together I've got an eqnarray with multiple equations and a label on it, e.g.: \begin{eqnarray} \hat{\delta}(q_0,\epsilon) & = & ...
1
vote
1answer
6k views

Left-align {align} environment

I have a problem writing my report in LaTeX. I dearly need this block of equations to be aligned on the left side of the page, in fact I want all my equations to be left-aligned and have the option of ...
2
votes
2answers
2k views

How to align if-condition in equation systems

I use this environment for an equation system: \newenvironment{sistema}{\left\lbrace\begin{array}{@{}l@{}}}{\end{array}\right.} But in this way the "if-conditions" are not aligned, as an example: ...
3
votes
1answer
856 views

Redefining the amsmath equation* environment

For the background to this, see my previous question I've been trying to make changes in my LaTeX document so that math displays in black and text in red. Thanks to Stefan Kottwitz and Torbjørn T. ...
5
votes
1answer
884 views

Equations lining up and labeling

I'm trying to line up multiple equations next to each other and have them all properly labeled. There is another question discussing this exact problem. Unfortunately, all the solutions proposed there ...
4
votes
2answers
413 views

Making \[ and \] behave as \begin{gather*} and \end{gather*}

I'm trying to redefine \[ and \] so that they behave as \begin{gather*} and end{gather*}. I've been doing this using \DeclareRobustCommmand; however, when I try to compile the following minimal ...
5
votes
2answers
1k views

Adding labels to a formula

I have a diagram like this, explaining a formula: \documentclass{article} \usepackage{stackrel} \begin{document} $\stackrel[e+f+g+h^i]{a^b}{c d}$ \end{document} For this example, I have removed ...
3
votes
2answers
768 views

Amsmath, spacing, left alignment

It was recommended that I include amsmath package to use \tag{} (which works). When I do this however, it somehow changes my predefined spacing; I would like everything to be left aligned, no left ...
18
votes
3answers
15k views

How to provide a definition for symbols in a LaTeX math equation?

Say I have an equation: x = R + E What's the best way to provide a definition for R and E? Is there a way to include a line under the equation saying what the variables mean (i.e. a "where" ...
3
votes
1answer
666 views

Trouble with the showkeys package

I am using showkeys package in LaTeX so my labels inside \[ \] math statements show up. Usually \[ \] does not show any numbering, I both want to use \[ \], and numbering, this was the only solution ...
13
votes
2answers
3k views

Displaystyle fractions in a system of equations

I'm trying to define an environment to use with equations' systems. So far, the best solution was \newenironment{eqsys}{\begin{equation}\begin{cases}}{\end{cases}\end{equation}} but I noticed that ...
24
votes
1answer
5k views

Flexible equation, align, multline environment

I'm looking for a command (say \foo{}) or pair of commands (say \foos, \fooe) that behave like: equation environment if there is no \\ nor & multline if there is a single \\ align if there are ...
4
votes
1answer
750 views

Align Environment and Spacing [duplicate]

Possible Duplicate: Blank lines in align environment When I put a blank line between a line of text and the align environment, it will add two blank lines instead. It seems that the align ...
5
votes
2answers
257 views

How to number a set of equations separately from another set?

How can I number a set of equations separately from another set? For example, if we have a file with this contents: \documentclass{report} \usepackage{amsmath} \begin{document} \begin{equation} ...
1
vote
0answers
213 views

Custom Equation Numbering [duplicate]

Possible Duplicate: Label equation with a symbol I wanted to know if there a way to create your own custom markings for equation numbering instead of the automatic numbering. Preferably, I ...
0
votes
1answer
951 views

Long formula alignment inside breqn with tabs?

It aligns the formula to the left-hand-side but I would like to get tabs here-and-there. How can I get tabs inside breqn or is there some package to do it automatically? $ cat test.tex % breqn -pkg ...
3
votes
3answers
5k views

Numbering side-by-side equations or inline equations

I am trying to produce a two-column table of math equations, where each cell contains its own left-justified, numbered equation. I tried using \begin{equation} \end{equation} inside the tabular ...
15
votes
2answers
15k views

Multiple subequation labels in one \ref

I'm trying to write a macro that puts subequations' labels in parentheses in a compact form. For example, if I have \begin{subequations} \begin{align} y - ax &= b \label{subeq1}\\ x^2 + ...
11
votes
1answer
2k views

Referencing subequations with cleveref

I try to refer to the parent number of subequations with \cref from the cleveref package. However, I would like to change the output "eq. (...)" into "eqs. (...)" when I refer to parent numbers ...
2
votes
1answer
291 views

Why using pdf we get better results than using dvi?

In How can I auto adjust a equation to appear in the entire page? (Scale to equations, is this exist?) I asked how I could change the equation sizes. Nothing seemed to work. But the problem was I was ...
8
votes
3answers
6k views

How to export a equation as a image without background?

For example, if we have a equation on a file like: \documentclass[12pt]{standalone} \usepackage{varwidth} \usepackage[utf8x]{inputenc} \usepackage[T1]{fontenc} \usepackage{amsmath, amssymb, ...
2
votes
1answer
354 views

Unwanted line breaks after equation tag when using fleqn and leqno

When you use fleqn and leqno and assign your own equations tags with \tag to equations in environments such as gather and align and you assign a tag with a certain length, then there's a line break ...
4
votes
6answers
8k views

How can I auto adjust a equation to appear in the entire page? (Scale to equations, is this exist?)

If I have a document like this: \documentclass[landscape, 12pt]{report} \usepackage[landscape]{geometry} \usepackage[utf8x]{inputenc} \usepackage[T1]{fontenc} \usepackage{amsmath, amssymb, ...
14
votes
1answer
7k views

How can I position equation numbers always to the left side?

Equations and amsmath environments put equation numbers to the right side by default, the output of \begin{multline} some equation \end{multline} is: equation (number) How can I change it this ...
3
votes
1answer
266 views

How can I make sizes of different symbols equal?

I have an equation like this \begin{gather} n_i(t-1)= \sum_{j \in S} v_{ij}(t) \\ n_j(t)= \sum_{i \in S} v_{ij}(t) \\ \forall_{t\in T_0} \sum_{i \in S} n_i(t)=N \end{gather} The third part of it ...
10
votes
3answers
2k views

How can I number a few equations together

i would like to write few equations, but all the equations will get only once numbered and in the middle (right side) of the equations. e.q. if i write 3 equations, the number will be to the right of ...
4
votes
2answers
868 views

System of linear equations wobbles

I tried to illustrate how to solve a system of linear equations but I don't come along with the different approaches to position the equations. They are shifted at some slides, e.g. if an arrow is ...
2
votes
1answer
3k views

Beamer color overlay in equation environment

I want to use this overly command <2->\alert<2> inside an equation environment to color some terms. How can I do this?
11
votes
4answers
10k views

How to show two groups of equations side by side: one implies the other?

I would like to show a bunch of equations can imply another bunch of equations, with double right arrow in between. Here are two trials of mine: one is to use another level of math mode to enclose the ...
9
votes
2answers
8k views

Mixed (sub)equation numbering within an array

I am trying to use subequations inside an array environment. Specifically, I am trying to create an array that has both regular numbered equations and subequations. I am looking to create an array ...
10
votes
2answers
4k views

Using the same number for repeated use of the same equation

I'm a LyX beginner so please don't worry about stating the obvious. I'm numbering equations by section in my document. That's working fine. However, when I refer to the same equation later on in the ...
5
votes
3answers
273 views

How to number equations and floating materials by page number

I am somewhat intrigued by question Something like \enumerate, but with custom numbers at each \item, which mentions a book where each question is numbered by its page number and the question number. ...
5
votes
2answers
245 views

Applying breqn in bulk to typeset a math book for my kindle?

I'm trying to typeset this book for my Kindle: http://linear.ups.edu/ Unfortunately some of the equations result in overfull hboxes, and I can't read them. Though I've managed to manually convert ...
16
votes
1answer
13k views

Change font size of an align environment

In a document, I'd like to change the font size of a single align environment (not globally throughout the document). What is the proper way to do this? I've been using Preceding paragraph. {\tiny ...
6
votes
2answers
3k views

placement of QED symbol on numbered equation line

This question is both on LaTeX and on mathematics writing style; I hope that's still apropriate here. I have a proof that ends with a (right) numbered equation, and I'm pondering about where to put ...
11
votes
2answers
10k views

How to place and number 3 short equations in one line?

I have 3 short equations which consume much vertical space, if each one is typeset in a separate line. How can I typeset them in one line in a "mathematically correct" way? I do not necessarily need ...
12
votes
4answers
7k views

Aligning plain `align` and `cases`?

The cases environment works very well for enumerating cases within a large left bracket. I'd like to be able to combine it with the align environment so that equals-signs and conditions also line up: ...
4
votes
1answer
632 views

Left-hand vertical rule applied to flalign environment with automatic pagebreak

I am referring to the coderule environment (see Override \centering to left justify an image) presented earlier by @TH as answer to the following question: Override \centering to left justify an image ...