{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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11
votes
1answer
665 views

Integral Sign $\int…$

does anybody know how to write integral signs in LaTex that are slanted to the left, and not the right. See here if you do not know what I mean: (From http://en.wikipedia.org/wiki/File:...
24
votes
3answers
7k 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 ...
18
votes
2answers
13k views

Force upright Greek letters with isomath

The isomath package makes it possible to typeset upright Greek letters via \mathrm and \mathbf. Is it it possible to force all Greek letters to be typeset upright unless specified otherwise, e.g. to ...
17
votes
4answers
7k views

Intertext vertical spacing

How do I reduce the vertical spacing of \intertext?
16
votes
2answers
17k 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 \\ ...
16
votes
1answer
10k views

Split expressions with parentheses in align environment

I am writing down a rather long expression, which has to be splitted in a align environment. The thing is that this expression has parentheses which have to be splitted too. I don't want to use ...
15
votes
2answers
2k views

Draw Lewis structures like a book

I want to draw a Lewis structure as in the picture. I tried to do with chemfig but does not perform the separation of the points and a minus in the superscript.
11
votes
4answers
8k views

Coding an equation with description

I want to code this equation in LaTeX: I'd like to know how to code the equation and the description below it with a reference as well.
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. ...
9
votes
4answers
5k views

Using LaTeX to render hypergeometric function notation

I decided to look if the solution Caramdir gave in this question would work as well for my attempts to use a new notation for hypergeometric functions. However, trying {}_3 F_2\left(\begin{matrix}a&...
21
votes
2answers
4k views

Multiset notation in LaTeX

Does anyone know how to make (nice looking) double bracket multiset notation in LaTeX. i.e something like (\binom{n}{k}) where there are two outer brackets instead of 1 as in binomial? You can see an ...
18
votes
1answer
7k 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 ...
18
votes
2answers
10k 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 ...
13
votes
1answer
3k 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 ...
12
votes
2answers
1k views

Preventing \MakeUppercase from affecting mathematics

Is there a way to prevent \MakeUppercase from affecting in-text equations? In this example, abc should change to ABC, but n should be left as it is. \documentclass{article} \begin{document} \...
8
votes
1answer
731 views

Can I redefine the dollar

I want to capture the math mode through a redefinition of the $. I thought about something like \def$#1${here was a formula} % to test $x+y=z$ I would expect "here was a formula" as output. Is it ...
8
votes
1answer
4k views

Punctuation in equations

My document will contain a lot of equations, and as usual in that case I would like to use "punctuation" in the equations, like commas, colons, periods/full stops, semicolons, etc. Is there a special ...
16
votes
3answers
2k views

Overline thickness

Is there a way in latex to change the vertical thickness (height) of the line generated by the \overline command? \[ \overline{\overline{A \vee B}} = \overline{\overline{A} \wedge \overline{B}} \]
16
votes
7answers
2k views

Aligning polynomial terms

In LaTeX align, I'm struggling to align polynomial terms and assume there's an easy way to do it. But I cannot find the simple/elegant solution. What I would like is something like this: x1 + x2 ...
10
votes
1answer
576 views

Diagnosing the “too many math alphabets” error

I recently hit up against TeX's "too many math alphabets" error. I'm trying to diagnose what is using up my math alphabets, as I can't work out where they are going. Of course, I could just start ...
10
votes
2answers
3k 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} ... \\ ....
9
votes
1answer
754 views

Redefine the default depth of superscript and subscript document-wide

The behavior of subscript and supscript operator _ and ^ is like a blackbox to me, I am curious if I could redefine the behavior of them globally for a document. I searched the forum and found ...
7
votes
6answers
5k views

Use \mathrm by default

How can I get roman font by default in math mode?
23
votes
3answers
740 views

Visually highlighting symbolic material

I have a diagram in which I need to indicate the difference between symbolic mathematics and English words (potentially to someone who doesn't know about it): Colour works beautifully for making ...
21
votes
2answers
230 views

\( \) don't work with TOC?

If I write this line of code \subsection{Ranger \( n \) boules distinguables dans \( M \) boîtes} I obtain an error over the second \) (./Probabilité.toc ./Probabilité.toc:8: LaTeX Error: Bad ...
16
votes
2answers
453 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{$\widehat{\mathcal{C}}$}, \fbox{$\widehat{\hspace{0pt}\...
11
votes
3answers
1k views

How to extend the text under summation symbol without making extra space

I want to get the following: I tried the following \[ a(i,k) \leftarrow \min\Big\{0, r(k,k) + \sum_{i^{'} | i^{'}\notin \{i,k\}}\max\{0, r(i{'},k)\}\Big\} \] and got How can I make the ...
11
votes
1answer
1k views

How can I make an overset symbol at the same size and height as \bar except with a different symbol?

Apologies for the cryptic title, but I was not sure how best to phrase the question in one sentence. I am essentially trying the create a vector symbol with \rightharpoonup as the top instead of the ...
9
votes
2answers
2k views

What is \mathchoice?

Can someone give me a detailed starters' guide to \mathchoice? I was trying to define commands for underscript and overscript (which I have found out to exist and be called \underset and \overset), ...
9
votes
3answers
3k views

How to write Stirling numbers of the second kind?

What is the best way to write a Stirling number of the second kind? Isn't there any standard command in LaTeX? For example, a command \binom is for binomial coefficients. In the wikipedia article on ...
8
votes
4answers
720 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} \begin{...
23
votes
1answer
174 views

Why is the fraction off the math axis in XeTeX?

The fraction in textstyle is off the math axis in XeTeX when I use a Unicode math font. In LuaTeX, though, it aligns nicely with the math axis. The follwing MWE should illustrate this. Also, in ...
13
votes
4answers
1k views

Can I get $$…$$ to behave like \[…\]?

Is it possible to modify LaTeX so that good old $$...$$ behaves like \[...\] (and by this I mean that it should be synonymous to it). If yes: Dear LaTeX3 developer, please integrate this into LaTeX3! ...
13
votes
5answers
4k 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 $$ {\Large{*}}_{...
11
votes
1answer
3k 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 ...
9
votes
2answers
341 views

How to use punctuation marks in LuaLaTeX with unicode-math?

I also posts this here: http://texwelt.de/wissen/fragen/3000/interpunktion-in-lualatex-mit-unicode-math-von-hauptschriftart. The problem is that I want to have the \period symbol (also range="002E ...
6
votes
4answers
368 views

How to link two terms in math mode

I am trying to get something like this: which is different from \underbrace or \underbracket. It says that a.c=3. Is there already a command for that? I have not found it. Or should one define it? ...
4
votes
2answers
785 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 ...
96
votes
4answers
111k views

Nice looking empty set?

I feel like the standard $\emptyset$ is ugly. By hand, my empty set symbol is a lot rounder, then this "slashed-zero"-type symbol. Two questions: Do people really use it (I mean people who have any ...
69
votes
5answers
159k views

How to add a matrix to a LaTeX document

How do we add a matrix to a LaTeX document?
30
votes
2answers
4k views

Drawing a hypergraph

What is the proper way to draw a hypergraph? Is there a package to do this, or is there an easy way to draw such diagrams with a common drawing method like tikz? I'm trying to draw something like
14
votes
2answers
4k views

Selecting main math font in LuaTeX?

I’d to set some fairly simple maths in Minion Pro (and potentially other system fonts), using LuaTeX.  I’d hoped that something like the following should work: \documentclass{minimal} \usepackage{...
37
votes
6answers
2k 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. ...
27
votes
5answers
10k views

Is there a wider equal sign?

I have defined the equal by definition sign: with this code: \newcommand{\eqdef}{\overset{def}{=}}. However, "def" extends over the edges of the equal sign. Is there a wider equal sign to use?
70
votes
5answers
3k views

{(x+y)}^2 or (x+y)^2?

This expression is just an example, of course. My question is: should one always specify the quantity being exponentiated by surrounding it with braces, or is it acceptable to drop those braces? (...
30
votes
4answers
4k views

When to use math mode?

In my document, the numbers inside math mode appear differently than those numbers out. Sometimes, I have numbers like "10 squared" within a paragraph, so it seems useful to use $10^2$. However, maybe ...
22
votes
2answers
10k views

The right way to get sans-serif math?

I notice that beamer has everything in sans-serif by default, including math. In a regular article, simply using \sffamily doesn't cause math to be set in sans-serif. Using \renewcommand{\...
24
votes
3answers
17k 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.
34
votes
4answers
9k views

Numbers outside Math environment

Should numbers inside the text be placed inside a math environment? For example, if I am writing ...indent code by 4 spaces..., should I write it this way or ...indent code by $4$ spaces...? ...
23
votes
2answers
6k views

mathtools vs amsmath

I read on http://en.wikibooks.org/wiki/LaTeX/Mathematics: The mathtools package fixes some amsmath quirks and adds some useful settings, symbols, and environments to amsmath. It sounds like "...