{math-mode} is about typesetting mathematical content, e.g. tweaking the appearance of spacing and symbols in a formula, or producing specific mathematical constructs. For questions about "wrapper" environments like equation or align, consider the tag {equations}.

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20
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3answers
10k views

How to put a brace on the right, not left, to group cases?

How can I get a brace on the right, not the left, to group cases, using cases? (I know actual cases look better with the brace on the left, but the items I need to group are not literally cases. They ...
19
votes
3answers
5k views

\DeclareMathOperator won't take arguments

I'd like to define a family of math operators that have the same superscript, but different subscripts. My first attempt was: \DeclareMathOperator{\Upd}[1]{U^M_{#1}} But the log tells me that: l.3 ...
13
votes
2answers
3k views

How can I change the whitespace above and below math displays?

I'm looking to squeeze an article written in LaTeX with amsmath to a set number of pages. In the text, I have a number of numbered math displays which I refer to throughout. However, they take up ...
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. ...
10
votes
2answers
8k 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} ...
16
votes
4answers
9k views

How to typeset indices before a symbol?

I know how to write a usual index with the help of the underscore, but I seem to be unable to find out how to write an (upper/lower) index in front of a letter/text. These kind of indices are common ...
16
votes
1answer
6k views

How to reference equations using letters and numbers

Sometimes it is convenient to refer to a group of equations by a letter and a number. For example: 2+1 (A1) 2+4 (A2) x^4 (B3) x^e (B4) Placing ...
14
votes
2answers
6k views

Limits under multiple \sum

I would like to place a lower limit under two consecutive \sums, somewhere in between. So I have \sum_{j=1}^{\infty}\sum_{k=1}^{\infty} and would like to place j>k in the lower limit between the ...
12
votes
1answer
2k views

How do I create the negated arrow on \xrightarrow?

Say I have $x\xrightarrow{\rm mb}y$ as in the first line below, but I want a negation symbol like the one defined in \nrightarrow, as in the second line, but extendable. Does anyone know how I can do ...
11
votes
2answers
4k views

How to get a vertical bar which is longer than \mid ?

sometimes when writing mathematical expression with partial derivatives, one needs to write a vertical bar afterwards and write the value at the which the partial derivatives are being computed as ...
5
votes
2answers
2k views

Underbraces in Matrix Divided in Blocks

How to put underbraces, inside the parenthesis of a matrix, to name both sides of the blocks? \documentclass[a4paper,12pt]{article} \usepackage{amsmath} \usepackage{array} \begin{document} . . . \[ ...
16
votes
1answer
5k views

How To Change Math Font Only?

I'd like to keep my text in Helvetica as usual but would like to have my equations and formulas in Roman or MT Extra. So far, I've tried using different packages but that changes both the text and the ...
13
votes
3answers
14k views

Supremum of the infimum

Consider the following snippet: $$\text{d}_{H}(A,B) = \max\left\{ \sup_{a\in A} \inf_{b\in B} \text{d}(a,b),\sup_{b\in B} \inf_{a\in A}\text{d}(a,b)\right\}$$ In the output, the text under the ...
12
votes
6answers
549 views

Typesetting 144…4 with “n times” under the 4's is easy, but what about \sqrt{144…4}?

Inspired by this question on the math StackExchange, suppose you want to typeset the square root of the number 144...4, that is, 1 followed by n 4's. If you write $\sqrt{1\underbrace{44\ldots4}_{n\ ...
10
votes
3answers
1k views

How to create vertical and horizontal dotted lines in a matrix?

Similar to this question, I am trying to output a similar matrix with dotted line instead of dashed line. Is there anyway to do this? I also try to use these three packages: ...
10
votes
2answers
2k views

Force line break inside a \lim argument in align environment

Inside an align environment I have a \lim with two variables which should be displayed in two lines: \begin{align} ... f & = \lim _ {a \rightarrow -\infty \linebreak b \rightarrow \infty} ... \\ ...
15
votes
2answers
399 views

Why does \widehat behave differently if I insert \hspace{0pt}?

I am getting some inexplicable behaviour from \widehat: \documentclass[12pt,a4paper]{article} \usepackage{amsfonts} \begin{document} \[ \fbox{$\widehat{\mathcal{C}}$}, ...
8
votes
4answers
458 views

How to construct a long equation that is split in LHS and RHS to occupy a narrow column?

I have a homework document using 2-column article document class as follows. \documentclass[twocolumn]{article} \usepackage[a4paper,margin=1cm]{geometry} \usepackage{amsmath} \begin{document} ...
7
votes
1answer
2k views

Coloured math in beamer

I have a question: Is there any way to have math (everything between $s) in different colour than text (for example, green) in beamer?
5
votes
2answers
3k views

How to put something at the top of the \longrightarrow?

I would like to put something at the top of the \longrightarrow, something like \longrightarrow^{k\rightarrow\infty}. However, instead of putting k\rightarrow\infty on the top right corner, I would ...
0
votes
2answers
2k views

\begin{equation}: “Display math should end with $$” error?

I'm pretty new to LaTeX, completely new actually, and there is one thing I can't quite understand. I get the error "Display math should end with $$" when writing an equation like this: ...
14
votes
3answers
1k views

mathop shifts the baseline, DeclareMathOperator doesn't

Here is a little example that illustrates this strange behaviour: \documentclass{article} \usepackage{amsmath} \DeclareMathOperator\foo{\mathbf{l}} \begin{document} ...
13
votes
1answer
344 views

\ifmmode doesn't seem to work correctly inside an array environment

I’m struggling with getting \ifmmode to work correctly when used inside an array environment which is inside a displaymath environment. Here is a minimal example: \documentclass{article} ...
12
votes
5answers
3k views

Define strange operators

I' looking for a symbol rendering the connected sum of $n$ topological spaces (or other quite strange topological operations) in a "product-like" manner... What For example in writing $$ ...
8
votes
1answer
1k views

siunitx: Bold single numeric cells

I'm struggling to make a single numeric cell in an siunitx table bold. (A similar question for making a whole column bold is available here.) I want to define a simple macro which I can set for the ...
6
votes
2answers
303 views

Problem with typesetting maths content in an unusual font in beamer

I want to typeset math in different font called Antykwa Torunska, which supports maths. Unfortunately, when using it in beamer the math font is switched to the standard math font of beamer. How can I ...
6
votes
1answer
255 views

Automatic reduplication of equal sign in the beginning of broken formula

Suppose we have the following code \documentclass{article} \begin{document} $a=b=c=d=e=f=g=h=i=j=k=l=m=n=o=p=q=r=s=t=u=v=w=x=y=z$ \end{document} which produces the following result I want to have ...
6
votes
1answer
1k 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 ...
5
votes
1answer
206 views

\sqrt: The vinculum and the rest of the radical are misaligned

When the height of the radicand exceeds a certain threshold, LaTeX replaces the check-sign-like part of the root sign with a more vertical one. This behavior has a flaw: The vertical replacement part ...
4
votes
2answers
495 views

How I can typeset this equation with LaTeX?

I would like to typeset the enclosed equation but placing the last a_{i, j} in the same column as the above a_{i, j}+1 and a_{i, j}-1, and the b_i in the same column as the above b_i's and not as it ...
3
votes
1answer
346 views

Typesetting mathematical formulas in line breaking

When you typeset a mathematical formula is there a rule regarding the breaking of the formula in a new line, meaning if for instanse the formula breaks in a plus sign (+) or in a equal sign (=) then ...
36
votes
6answers
1k views

Microtypography on equations

Is there a way to make all three lines of math in the code below take up the same amount of length by use of font expansion? I know too little about microtype to even see if it could offer a solution. ...
57
votes
5answers
103k views

How to add a matrix to a LaTeX document

How do we add a matrix to a LaTeX document?
23
votes
1answer
403 views

Sloppy \left and \right?

The \left and \right commands often produce improvidently large delimiters. It almost always looks better to use delimiters that are just slightly too small than delimiters that are too large. With ...
19
votes
3answers
889 views

How can I create a new extensible symbol?

Given an arbitrary thin vertical symbol, can I create a new math delimiter from it (and if so, how)? Edit: Ideally, I would like to be able to create an extensible symbol, either built out an ...
30
votes
4answers
5k views

How to have overlapping under-braces and over-braces

I am trying to typeset an equation that has overlapping over and under braces as per the image below: I have managed to typeset it using a sort of a hack, by typing the equation twice, once using ...
39
votes
4answers
3k views

What is the Necessity of $…$ Around Numbers?

I typed up an assignment with a lot of numbers in LaTeX and turned it in to my adviser. When he returned it to me with some corrections, one of which was a lot of $ around my numbers. I understand ...
13
votes
1answer
1k views

Which version of LaTeX permits more than 16 alphabets?

Sometimes I receive a message: ! LaTeX Error: Too many math alphabets used in version normal. I know that there is a limit of 16 alphabets at most allowed to one article. However this message ...
17
votes
1answer
915 views

Which command should I use for textual subscripts in math mode?

Textual subscripts like in W_{total} should be typeset in an upright text font (so that code isn't good practice), as has been discussed in various questions here. Now there are several ways to ...
17
votes
3answers
10k views

How to stack limits for maths operators?

I have a question on how is it possible to create a \sum with two lower limits directly positioned right underneath each other. I have tried hard and cant seem to get anywhere with it.
16
votes
2answers
942 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 \\ ...
20
votes
2answers
2k views

Typesetting Right-to-Left math

UPDATE: I've managed to produce something that is aesthetically correct, however with a lot of "hardcoding" and trial and error to manually measure my spaces. Not to mention that I have to write my ...
17
votes
2answers
10k views

double perpendicular symbol (for independence)

I found from http://jblevins.org/notes/latex that I could use the independence symbol: \newcommand\independent{\protect\mathpalette{\protect\independenT}{\perp}} ...
14
votes
3answers
1k 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 ...
13
votes
3answers
345 views

How could LaTeX replace the tokens <= by the command \leq?

How could LaTeX replace the tokens <= by the command \leq efficiently? Example 1: I have this code: \[ 2x <= 4x - 2 \] And I want to get after the compilation this: Example 2: \[ ...
9
votes
1answer
554 views

Can I make siunitx commands use serif fonts like the rest of the math in beamer?

In a beamer presentation I can use \usefonttheme[onlymath]{serif} to typeset the math in a serif font while the rest of the presentation is in a sans-serif font. But the \SI command from siunitx ...
27
votes
6answers
21k views

Typesetting of negative versus minus?

I've occasionally seen a negative (when a number is simply negative, not a subtraction), typeset as negative sign that's slightly skinnier and above the centre line of text. Is this proper notation ...
23
votes
3answers
2k views

maths nested superscripts and subscripts displayed incorrectly inline

I am having a strange bug when using nested superscripts and subscripts in inline math (displaystyle works fine). This behaviour is the same independently of the font used or the compiler (orginally ...
19
votes
3answers
12k views

How to typeset function restrictions

I wonder how to typeset the restriction of a function to some subdomain, a la $f|_A$ or $f\restriction_A$ , but with the vertical bar being as big as possible.
17
votes
4answers
12k views

Evaluation of Differentiation and Integration

I was having some thought about what would be the syntax to make the end point evaluation of derivatives or integrals. Such as making the | with the two end points of evaluation on the top an bottom ...