{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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30
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3answers
8k views

Centering \vdots in a system of many equations

I have a system of equations with an arbitrary number of equations (k). I'd like to use \vdots to compactly describe the system, like so: \begin{align*} R(-1) &= \sum_{i=1}^m A(i)R(i-1) \\ ...
32
votes
6answers
4k views

For formal articles, should a displayed equation be followed by a punctuation to conform to the language grammar ?

For formal articles, should a displayed equation be followed by a punctuation to conform to the language grammar ? For example: The most well-known physics formula is \[E=mc^2.\] %should I put ...
4
votes
2answers
1k views

Complicated alignment within multiline equation

I'm having trouble getting the desired alignment behavior in a set of "sets" that I'm typesetting. I have a bunch of set definitions of the form $$U = \{\text{$x$ $|$ $x$ satisfies some ...
3
votes
2answers
847 views

How to turn equation tags off by default?

I'm writing a document in which very few of the equations actually need tags. So instead of using starred environments, I would much prefer to exchange the meaning of the starred with the non-starred ...
0
votes
2answers
2k views

Trouble with multicol

I'm trying to use multicol to create a formula sheet with two columns. I have specified the use of such columns, and their position, but when I compile they come out one after the other rather than ...
26
votes
1answer
39k views

Symbol for Gaussian distribution

What is the symbol for the normal density function in LaTeX?
23
votes
5answers
3k views

Multicol layout for systems of (linear) equations

How can a similar arrangement be archived (with ams*, aligned, multicol, etc) 1.2.3 Solve the following system of equations: a) x - 2y - 4z = 1 b) -23x + 43y = 22 3x - ...
7
votes
2answers
975 views

Equation environment definition

Where is the full definition of the equation environment? I cannot find it in the .cls files. Is this in latex.ltx? Or something?
3
votes
1answer
2k views

An environment to change the vertical space around a formula

Specially in beamer presentations, I use a custom environment to change the vertical space around a formula. The code is: \newenvironment{shrinkeq}[1] { \bgroup ...
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 ...
63
votes
2answers
14k views

Two letter variable names

In math mode, TeX assumes "hidden multiplication" (so that two variable names put nearby have invisible multiplication between), so that, AFAICT, expressions like $ABC$ are rendered with small ...
6
votes
2answers
236 views

How to get the equation to look in a required format?

I am still new in LaTeX - beginner. How can I have the equation to look like this (the example is shown in ms word): Lexical level: f o x + plural (‘+’ is a morpheme boundary) Surface level: ...
21
votes
2answers
6k views

Is there a difference between the `displaymath` and `equation*` environments?

The amsmath documentation says Basic LaTeX doesn’t provide an equation* environment, but rather a functionally equivalent environment named displaymath. Are they really the same or is there a ...
0
votes
2answers
7k views

\label inside an align environment [closed]

It seems like whenever I use \label{an-label} inside the align environment, and then use to refer to it using \refeq{an-label}, I get the section number instead of the equation number. This does not ...
19
votes
2answers
8k views

Left/Right across multi-line equation

I have a multi-line equation that I want to have matching sized parentheses. The advice I read online was to use \left( equation \right. \\ left. rest-of-equation \right) . However, this syntax leaves ...
12
votes
2answers
4k views

what's a replacement for \lefteqn in the align environment?

I would like to avoid the use of eqnarray. I would like to use the align environment instead. However, I have an equation that I specify currently the following way: \begin{eqnarray} ...
2
votes
1answer
793 views

why mathtools does not work for showing only equations which are referred to in the text?

I am using mathtools in the following way: \usepackage{mathtools} \mathtoolsset{showonlyrefs,showmanualtags} Then, to refer to equations I use \refeq{equation}. What happens is that there is a ...
8
votes
1answer
773 views

How to centre my display math overfull hboxes?

I have an overfull hbox which I've decided to live with. Actually, several. However, since they're in \[…\], it would look better if they could remain centered, i.e. overflowing the margins equally ...
44
votes
4answers
75k views

How can I change the font size in math equations?

I find that whenever I'm typing some equations into a document, and the equation gets a bit complex (let's say a fraction in a parentheses, squared, inside a square root, inside a fraction), the ...
9
votes
2answers
4k views

What are the Open source WYSIWYG Independent Web Equation Editors available on LaTeX/MathML

I am looking for a solution of an Equation Editor to be added to my site. The equation editor should be open source, WYSIWYG (users should be able to type out Equations as if in MS Equation Editor or ...
0
votes
0answers
342 views

How do I give an equation a name instead of a number? [duplicate]

Possible Duplicate: Custom equations' names I'd like to label a couple of equations by name, right-aligned, where the (number) would normally appear in the document: how do I do this?
22
votes
2answers
3k views

Table of Equations

I've looked around for this, and haven't been able to find a satisfactory answer; How would one go about producing (automatically) a table of equations, just a numbered list of used equations, ...
19
votes
2answers
16k views

Custom equations' names

Do you know ho can i call a reference to an equation using \ref or \eqref and obtain (name of the equation) instead of the standard counter? Thanks!
52
votes
2answers
4k views

How do I number equations only if they are referred to in the text?

I have a paper where all equations are numbered, but I want to number equations only if they are actually referred to in the .tex file using \ref{}. How can I make that happen? Alternatively, how can ...
4
votes
2answers
3k views

Equation numbers messed up

I'm writing a thesis as a collection of different articles. I'm treating each article as a chapter. The first article has Equations numbering A.1, A.2 etc and the second article has equation numbering ...
7
votes
1answer
5k views

aligning a multiline formula with the bullet of itemize

I would like to use a multiline equation into an itemized list, but such that the bullet of the list is aligned with the first line of my equation. The current code I use is like this: ...
24
votes
3answers
2k views

Getting a tikz picture to have an equation number

I make a lot of commutative diagrams and am trying to switch to Tikz from amcd,diagrams, etc. I often have to refer to these diagrams in the text and would rather have them as equations (i.e. with and ...
16
votes
6answers
5k views

Align two inequalities

I am trying to align two inequlities vertically. The \le signs should have the same horizontal positions and the term in the should be centered. My first attempt: \begin{align*} \sum a &\le \sum ...
10
votes
1answer
3k views

Does amsmath provide any medium to auto-break equations?

I'm writing large equations in texlive with amsmath, and I want them to be automatically broken at the end of the line. Is there any way to do that with amsmath? What would you recommend me to do ...
84
votes
5answers
169k views

How can I split an equation over two lines

I am having the following equation: \begin{equation} Q(\lambda,\hat{\lambda}) = -\frac{1}{2} P(O \mid \lambda ) \sum_s \sum_m \sum_t \gamma_m^{(s)} (t) \left( n \log(2 \pi ) + \log \left| C_m^{(s)} ...
12
votes
3answers
19k 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 ...
11
votes
5answers
3k views

Moving the equation number up

In what's below, the equation numbering is annoying and forcing it to move up would be a solution. Anyway what are your suggestions to fix this without modifying the equations? ...
11
votes
2answers
203 views

How do I make “gather” object, place its self in the text, the same way as an equation object?

Assuming the amsmath package is installed. I found a difference between the way that an equation object and a gather object is embedded within the text. If an equation is beneath a line of text that ...
14
votes
2answers
898 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} ...
22
votes
11answers
2k views

What useful web services are out there?

Looking at this question, I wonder what good and useful web services are out there. For example the LaTeX symbol classifier looks interesting. You can draw a symbol with your mouse and get back the ...
21
votes
1answer
2k views

Does a tool exist which can take a LaTeX equation and convert it to a format suitable for evaluation in Wolfram's Mathematica?

I use LaTeX to type up my homework, but as I work I often need to pop things into Mathematica (or manually type them in, or manually use my TI-89, etc.). Currently, I've been manually translating ...
10
votes
1answer
13k 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
14k 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*} How can I get i \in B below the \sum symbol ...
25
votes
3answers
1k views

How to avoid widow lines after displayed equations

If a displayed equation is close to the bottom of the page, TeX likes to insert a page break even if the current paragraph contains only one more line after the equation, as e.g. in ... it follows ...
19
votes
4answers
8k views

Making a new environment combining equation and split

I'm trying to define a new environment that consists of a split environment inside an equation environment. But I'm getting an error. Here's what I'm doing: \documentclass[a4paper,12pt]{article} ...
10
votes
1answer
1k views

How to organize labels when there are too many equations?

I'm writing a moderately long text using LaTeX, and it's great to be able to organize chapters, sections, appendices, and everything else almost automatically. One thing has been bothering me though. ...
6
votes
1answer
2k views

Displaying an equation in a list

How could one get a displayed equation inside a list environment, say itemize, so that the equation is both centered horizontally and on the same line as the bullet, but with the bullet still on the ...
12
votes
3answers
8k 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*} ...
12
votes
2answers
2k views

How do I produce Theorems and equations which are numbered by hand?

I'd like to be able to write a LaTex document with numbered theorems and equations, but I would like not to have them numbered automatically, but rather put in by hand. Ideally, I'd like to be able ...
40
votes
6answers
126k views

How do I turn off equation auto numbering

I have an equation like this: \begin{align} P(A \cup B) = \sum_{\omega \in A \cup B} P(\omega) = \sum_{\omega \in A} P(\omega) + \sum_{\omega \in B} P(\omega) = P(A) + P(B) ...
7
votes
3answers
602 views

help with creating a page of equations using (LaTeX?)

I am looking to create a template where I can quickly generate pages of basic math equations. LaTeX seems like a good place to start typesetting math equations but I am completely stumped with the ...
10
votes
2answers
10k views

A lateral brace to group a set of equations with labels

I have a set of equations that I'd like to display together (as an example, the Maxwell's equations). Requirement #1: I'd like to have them labelled like in an align environment \begin{align} ...
13
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 - ...
9
votes
2answers
1k views

Changing the font for equation numbering

I know that I can change the font for the equation numbers by redefining the \theequation command by, say, \renewcommand{\theequation}{{\sffamily\arabic{equation}}} I am wondering if there's a ...
15
votes
4answers
5k views

Intertext vertical spacing

How do I reduce the vertical spacing of \intertext?