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

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34
votes
2answers
42k 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 ...
10
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?
7
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 ...
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 ...
16
votes
3answers
9k 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.
12
votes
2answers
7k 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 ...
9
votes
1answer
935 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. ...
19
votes
4answers
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?
15
votes
2answers
4k 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 ...
10
votes
1answer
699 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 ...
17
votes
4answers
2k 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 ...
12
votes
4answers
2k 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
222 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 ...
11
votes
2answers
162 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 ...
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, ...
6
votes
3answers
5k views

Add a comment on top of “equal” and “approximate” symbols [duplicate]

I was wondering whether it is possible to add some comment on top of the \approx symbol in a similar way that the command \xrightarrow{text} produces an arrow with text over it.
4
votes
2answers
864 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
1k 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
950 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 ...
6
votes
3answers
357 views

Wide inverted breve overset

I want an inverted breve that spans the width of two symbols rather than one. I have tried the suggestions in: inverted breve accent in math mode , and in How to put \smallsmile or \smallfrown on top ...
5
votes
2answers
4k 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
2answers
214 views

Footnote inside stackrel

I am writing an equation and I'd like to put above the equal sign $(=)$ a footnote describing shortly the reason for that equality. I tried \[x^2\stackrel{\footnote{foo}}{=}x\ast x\] but this ...
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
840 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.