{stacking-symbol} is about mathematical symbols created by stacking existing symbols above each other.

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31
votes
2answers
30k views

The \bar and \overline commands

I want to represent, say, the closure of a set or the extended reals, e.g., $\bar{\mathbb{R}}$ but unfortunately this creates a bar that is much too small (horizontally) and can barely be seen. On the ...
5
votes
2answers
2k 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 ...
15
votes
3answers
8k 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.
9
votes
3answers
2k views

Arrow between parts of equation in LaTeX

I want to make an arrow under an equation pointing from one part of the equation to another. A bit like an underbrace, but with an arrow. How can I do this?
11
votes
2answers
6k views

Is there an “underscript” command?

Is there a way to do underscripts? By "underscript" I mean a small font underneath the text object like limits or sums have. I don't want it to behave like a math operator though, where it is typeset ...
6
votes
7answers
3k views

frown and mathop/stackrel/overset

I need something like \stackrel{\frown}{MM'} to express the fact that MM' is some path. But I am not really satisfied by the look of the result. The \frown is too high. Would you please have a ...
14
votes
2answers
3k views

How to typeset “evaluated at” vertical bar with two conditions instead of one?

I would like to typeset the differential of a multivariate function evaluated at a point where two of the variables take precise value. I typeset the "evaluated at" using a vertical bar, at the bottom ...
18
votes
3answers
2k views

How can I type “lambda-bar”?

I would like to be able to add the symbol "lambda-bar" (see below) into an equation. How can I do this?
8
votes
1answer
628 views

A better notation to denote arcs for an American high school textbook

For years, I've been using a hobbled together command to get the arc notation as used in the textbooks adopted by high schools in my area. I'm not really all that pleased with the result: it's just ...
5
votes
3answers
1k views

How to put a symbol inside a circle arrow?

I'm trying to draw a clockwise circle arrow with a symbol inside. My current solution requires manual alignment of the content, and as such doesn't look very good. ...
12
votes
4answers
1k views

Vertical double asterisk that aligns well with the double dagger

The LaTeX text footnote symbol sequence begins with ∗ † ‡ § ¶ ∥. I'd like to define a vertical double asterisk ⁑ (\textastdbl) so that I can insert it into the sequence: * ⁑ † ‡ § ¶ ∥ (note: actual ...
11
votes
3answers
179 views

position of the slash in hatted \slashed

So I want to denote the Dirac operator with a hat, and I tried both \hat{\slashed{D}} and \slashed{\hat{D}}: the first one has the $^$ rather distant to the $\slashed{D}$, while the second one has the ...
16
votes
4answers
1k views

What is the command for a sum symbol superimposed on an integral sign?

I want to express a sum over all discrete states and an integral over all continuum states. Usually, the sign for this is a $\sum$ superimposed on an $\int$. Is there a command to make this symbol? If ...
11
votes
2answers
128 views

Looking for \bigCap or \bigdoublecap

I know \Cap (or \doublecap) and I know \bigcap. However, now I also need \bigCap (or \bigdoublecap) which is a \bigcap with another \cap in between. I already tried using \stackinset from the ...
10
votes
1answer
563 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 ...
7
votes
1answer
4k views

How to put symbol around the equal sign?

In the question Latex Math Symbol: Vitanyi puts a tiny plus symbol over his equals. How do I do that?, there was an answer to how to place additional sign over the equal sign. And my question is, ...
4
votes
2answers
595 views

How to stack three relations

Is it possible to stack three relations or symbols ontop of one another? Specifically I would like to stack three symbols, R, \rightleftarrows and L in order to define a pair of adjoint functors ...
3
votes
1answer
909 views

Adjusting vertical and horizonal spacing in \stackrel

I have several \stackrel's in my document. See the e.g.: \documentclass{article} \usepackage{stackrel} \begin{document} $\stackrel[\textrm{sand}]{\textrm{A}}{\textrm{B}}$ ...
9
votes
2answers
802 views

How can i shrink (or expand) the vertical spacing in \stackrel?

I've seen the following command used a lot to make the triangle-equals operator that means "is defined as": \newcommand{\defeq}{\stackrel{\triangle}{=}} However, I don't like how far apart the ...
5
votes
2answers
3k views

Creating non-math mode substitutes for \overset and \underset not dependent on the amsmath package

I have been using \overset and \underset to stack text, e.g.: \documentclass{article} \usepackage{amsmath} \begin{document} $\overset{\text{a}}{\text{b}}$ \\ $\underset{\text{c}}{\text{d}}$ ...
4
votes
1answer
2k views

How to place symbols on top of each other (not \overset, \underset)?

I tried to set two symbols on top of each other via: \begin{align*} \Rightarrow\atop\nLeftarrow \end{align*} How can I reduce the space between the symbols? \overset etc. is what I normally use, ...
4
votes
2answers
741 views

Customized accent symbol

I would like to create a customized accent that is basically the symbol \therefore, i.e. I would like to have a letter with the "three-dot \therefore symbol" on top of it. I am new to LaTeX and I am ...
3
votes
3answers
1k views

\shortstack when writing text in nodes in TikZ

I have seen the command \shortstack in some nodes in TikZ (for example, the accepted answer here). What is used for? I couldn't find its definition in the TikZ manual.