{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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16
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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 ...
16
votes
1answer
3k views

How to vertically align underbraces

I am trying to balance underbraces in the equation below, how can I ensure that both underbraces at the same depth? \begin{equation} y = \underbrace{ \left [ x^2 + r^2 (a^2+\frac{a^{0.3}}{b}) ...
16
votes
2answers
30k views

Using “cases” inside “equation” gives error[with “amsmath” loaded]

I'm trying to use the cases environment inside an equation environment. The sample code is quite simple: \begin{equation*} X(\omega) = \begin{cases} 1 \text{se $\omega ...
16
votes
2answers
9k views

Too much space at the top of a beamer block when using multilined math environment

I would like to place two math lines in a beamer block, as two separately centered lines. I know that I could do this using two distinct equation environments, but it would be nicer to use a single ...
16
votes
2answers
916 views

Suppress equation number when not refered to [duplicate]

Is is possible to use only equation or align environments without the * and then automatically suppress the equation number if there is nothing refering to that equation? It would make the LaTeX-life ...
15
votes
3answers
2k views

How can I illustrate decimal to binary conversion?

As part of my homework for discrete math I need to convert different decimal values, both positive and negative, to 8-bit binary representations using signed magnitude, 1's complement, and 2's ...
15
votes
4answers
2k views

Good typesetting practice for long equations

I have the following (quite horrible) equation in my thesis: \begin{align*} \frac{\partial^2}{\partial t_1^2} f(t_0,t_1) = ( \delta+2t_0+2t_1)^{\alpha( w-t_0+t_1 )-1} \cdot \bigl( ...
15
votes
6answers
585 views

How do I produce an equation of mostly text that is not too long for the page?

So what I want is an equation something like the following: Volume of diluted cell suspension or number of Petri dishes = volume of undiluted X density of undiluted ...
15
votes
3answers
5k views

Why doesn't lineno number a paragraph when it is followed by an “align” equation environment without a space?

lineno skips the line numbering in this case: \documentclass[12pt]{article} \usepackage{amsmath} \usepackage{lineno} \linenumbers \begin{document} Lorem ipsum dolor sit amet, consectetur adipiscing ...
15
votes
1answer
25k views

Change the type of equation numbering in document class article [duplicate]

Possible Duplicate: Continuous v. per-chapter/section numbering of figures, tables, and other document elements I have written my thesis in document class 'article' (don't ask me why). Now ...
15
votes
2answers
716 views

How to remove an unwanted white space at the last end of a horizontal curly brace?

You can see there is an unwanted white space at the last term below. \documentclass[border=12pt]{standalone} \usepackage{amsmath} \begin{document} $ ...
15
votes
2answers
308 views

Extra space added after equation when it is coloured

For some reason space is added after my equation when I colour it. This does not happen if the colour is added to text. Is there a simple way to prevent this from happening, like a global setting (I ...
15
votes
3answers
4k views

Can I insert an image into an equation?

I would like to use a small image in an equation, where a symbol like \alpha might otherwise be. Is there a nice way to do this?
15
votes
2answers
3k views

Align Equations Over Multiple Tabular Rows

I'm trying to set up a table with some equations in it, however I would like the equations on multiple rows to be aligned properly. So far I have \begin{tabular}{cc} \hline \multicolumn{1}{l}{Header ...
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 + ...
15
votes
1answer
9k views

Span formula over multiple pages.

I've looked through the search but I couldn't find what I specifically want. I have the following \begin{equation} \begin{split} Very long equation \end{split} \end{equation} Now, I have half a ...
15
votes
3answers
8k views

Aligning across 'aligned' equation blocks

I'd like to format two groups of equations such that all their equal signs line up and such that I can put a big brace to the right of each block to annotate that block. The last part is easily ...
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 ...
14
votes
9answers
848 views

Looking for a more appropriate version of \cases

Often-times I find myself wanting to write something like, That is, a vertical brace followed by a table consisting of three columns, the first and the last are math, aligned where-ever I like, and ...
14
votes
6answers
410 views

How to align the term to right

\documentclass[a4paper,titlepage]{article} \usepackage{amsmath,amssymb} \newcommand*{\PartialConj}{\ensuremath{\bar{\partial}}} \newcommand*{\Abs}[1]{\ensuremath{\left\lvert #1\right\rvert}} ...
14
votes
5answers
715 views

How to split a long formula and make it beautiful?

My method: \documentclass[UTF8]{ctexart} \usepackage{amsmath} \usepackage{amssymb} \usepackage{graphicx} \usepackage{epstopdf} \usepackage{inputenc} \begin{document} \begin{equation} \begin{split} ...
14
votes
5answers
5k views

Typesetting math: an optimisation problem (cost & constraints)

I really struggle to align a system of equation for an optimisation problem. It was all ok at the beginning until I started adding the constraint. I've got this code so far: \documentclass{article} ...
14
votes
2answers
14k views

Linebreak between \left and \right [duplicate]

Possible Duplicate: How to make \left, \right pairs of delimiter work over multiple lines? I would like to type something like this: \begin{equation} \begin{split} \left( ba ba ba ...
14
votes
3answers
5k views

How to Make Theorems and Equations Share Numbering

How do I make theorems and equations share numbering? The default numbering system goes like this: Theorem 1. Blah blah blah... 1=0+1 (1) Theorem 2. More blahs... Theorem 3. No more ...
14
votes
3answers
637 views

align vs. equation: Which way is typograpically preferred?

The main differences between align and equation are the spaces and that align cannot be used with split, as far as I know. What would be, from a typographic point of view, the preferred practice? ...
14
votes
2answers
4k views

inserting sentences between subequations

My apologies for asking so many questions here. I want to introduce a sentence in between 2 subequations which is not in math mode. Here is the code that I am using: ...
14
votes
5answers
7k views

Diagonal strikeout starting too low and ending too high

I want to strikeout an equation with diagonal line but I've not managed to get the diagonal line to draw as I want. The closest I've gotten is via the first example in Frédéric's answer of \cancel ...
14
votes
2answers
17k views

Use of \small in the equation environment

My equations are a little too large for the normal eqnarray environment, so I've been using the \small delimiters around the \begin{eqnarray} ... \end{eqnarray}. Unfortunately, this causes the the ...
14
votes
2answers
4k views

Image next to Equation

I am trying to make my first LaTeX file and have been reading syntax for a bit and have not been able to figure one thing out yet and don't seem to find anything about it online so I thought I might ...
14
votes
2answers
1k views

How do I show the equation formula again instead of its number of ref?

I have an equation: \begin{equation}\label{eq:equation} f(x)=x \end{equation} I would like to refer to this equation and show the whole formula again, and not only its number. In other words, I ...
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 ...
14
votes
2answers
2k views

Custom pagebreak in align equation

I got the following problem: Right now I am checking my equations, which are usually written in align. This looks great in most of the cases, but sometimes the pagebreaks are weird, ie there is a lot ...
14
votes
1answer
7k views

How can I have a bigger integral (\int) delimiter?

I'm writing some integrals and I don't like the way the \int symbol is displayed when it is followed by a big delimiter. Here's the code: \[ \int_S\biggl(\nabla\times\bar B - \mu_0\bar J - ...
14
votes
1answer
1k views

Center over-long equations between both margins

I understand the reasoning behind the fairly narrow textwidth in a default LaTeX article. 60-80 characters per line and all that. However, I am preparing a document that features many lengthy ...
14
votes
2answers
6k views

How can I center text/math inside a list environment?

When using math (display) mode in conjunction with a list environment, the displayed material is not truly centered on the page; it is only centered with respect to the indentation of the item. ...
14
votes
2answers
962 views

Is it possible to have a “real” \belowdisplayshortskip?

I think this is a tough one. Have you ever wondered why TeX sometimes produces vertical spacing around equations that is far from satisfactory? An example: \documentclass{article} ...
13
votes
3answers
23k views

Make equations large

I'm including some equations in my document, but want them to appear very large. I have them in display mode, as opposed to inline mode, but can't seem to find any way to make them larger. I've tried ...
13
votes
5answers
2k views

Help me to write Long LaTeX equations fast with colours and possibly with other aids

I am too slow LaTeX-typist, for example with the equations below I cannot find where I am missing some bracket. Could someone offer me some computational method? I use Vim but I am happy with any ...
13
votes
2answers
2k views

What does ampersand equals mean?

On the wikipedia page: http://en.wikipedia.org/wiki/LaTeX, the first example is \begin{align} E &= mc^2 \\ m &= \frac{m_0}{\sqrt{1-\frac{v^2}{c^2}}} \end{align} ...
13
votes
3answers
262 views

In the equation environment, how do I align an equation, AND an image AND the equation number?

I am trying to add an image adjacent to an equation in the equation environment. When I use the code below, the equation and the image are aligned but the equation number jumps to the next line. If I ...
13
votes
3answers
410 views

Question about the use of cleveref's \Crefrangeformat

I am trying to use the package cleveref to reference to a range of equations. I'd like to have the following result in the text: Eqs. (1)-(5) I want to be able to define the format once, using ...
13
votes
2answers
1k views

\mathrm{} or \mbox{}? What is the convention when writing a equation?

When writing a equation, sometimes we need write letters non-italic. For example, let A be a matrix and its transpose should be A^{\mathrm{T}} instead of A^T. In addition, if a letter does not ...
13
votes
3answers
2k views

How do I obtain multline-type alignment within a group of equations?

I want to achieve something like the following (for now achieved using Microsoft Paint): That is, I want to group a number of multi-line equations within a single equation-type environment (i.e. ...
13
votes
3answers
9k views

How to increase the spacing between equations in “gather”?

Is there a way to consistently increase the vertical spacing between equation lines in a gather (or gather*) environment from amsmath? Specifically, I want to produce something like \begin{gather*} ...
13
votes
4answers
1k views

How to move the equation numbers to bottom lines?

\documentclass[preview,border=12pt,varwidth]{standalone} \usepackage[a4paper,margin=1cm]{geometry} \usepackage{mathtools} \begin{document} \abovedisplayskip=0pt\relax \begin{align} ...
13
votes
2answers
232 views

Automatically replace environment align by equation+aligned combination

I would like to automatically replace the align environment by an equation + aligned combination. Specifically, whenever \begin{align} occurs, it should automatically read it as ...
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 ...
13
votes
2answers
1k views

Two-Headed Arrow Over Formula

I have a quantified formula. I want to show what happens when the order of quantifiers is reversed. To do this, I like to use a two-headed arrow over the formula, like this: Is it possible? I don't ...
13
votes
1answer
391 views

Equations with comment bubbles

Is it possible to have write equations accompanied with explanatory bubbles and comments? I am familiar with underbracket, overbracket, underbrace and overbrace but I have terms close together and I ...
13
votes
1answer
160 views

How can we detect that we are right after display math mode? (for vertical spacing)

I need a "\smartmedskip" feature/macro in plain TeX which is in usual identical to \medskip, however, if we are right after display math mode, then it should be just "disabled", i.e. it should then ...