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

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38
votes
2answers
63k 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 ...
25
votes
4answers
32k views

How to get an “approximately proportional to” symbol

I've looked everywhere, and there does not seem to be a symbol for this, i.e. a \propto with a \sim underneath. I've googled ways of combining these two symbols but haven't found anything ...
21
votes
4answers
3k 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?
20
votes
2answers
32k views

\Rightarrow with text above it [duplicate]

When using the command \Rightarrow is there any way to put text above it? I have tried \overbrace but is there a way to do it without this?
19
votes
3answers
11k 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.
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 ...
17
votes
2answers
5k 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 ...
15
votes
2answers
9k 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 ...
13
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 ...
13
votes
1answer
27k views

How to write “is distributed as” under a certain hypothesis?

I'd need a special symbol used in statistics. What I need is a tilde with something written upon it. I can get the tilde by using \sim, but I need to add a superscript over it (H_0). If I use ...
11
votes
3answers
257 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
1answer
253 views

Straight Braces

Can I make a variant of Latex Braces? In some equations system, I'd like to use a left brace like in this picture:
11
votes
2answers
221 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 ...
11
votes
2answers
416 views

conventional temperature symbol

Looking for a symbol for the thermodynamic concept of conventional Temperature corresponding to \SI{298.15}{\kelvin} or \SI{25}{\Celsius} it is basically an uppercase T with a lowercase c overlaying ...
11
votes
1answer
849 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 ...
11
votes
1answer
2k 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 ...
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?
10
votes
4answers
649 views

How to put bullet symbol on top of downarrow symbol

I want to put bullet symbol on top of downward arrow symbol. Can someone help me on this? \documentclass{article} \usepackage{graphicx} \begin{document} The transition is represented with ...
10
votes
1answer
192 views

TikZ: Adjust two words among each other by one character

I would like to create a logo in LaTeX. Here I need to adjust two words relative to each other by a chosen letter. Here is an example, where I'd like to get the two red characters exact among the ...
9
votes
2answers
1k 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 ...
9
votes
2answers
209 views

Typesetting arc over the letter upside down

How can I, using standard tools and packages, draw a "smile" over a letter? For example, I can typeset \wideparen{x} using yhmath package, but I need that arc to be upside down. Of course I want it to ...
8
votes
3answers
640 views

How to write a pretty \not \varepsilon

How can I write a pretty \not\varepsilon? I want something like \notin, since I use \varepsilon as a relation symbol like \in.
8
votes
3answers
697 views

double tilde symbol under letter

Currently, I'm representing second and fourth order tensor with this (taken from someone, and i don't really get how it works): % tensor 2: ...
8
votes
2answers
345 views

How to put a symbol inside another in math mode?

In math mode, I would like to put a symbol inside another. Let say I want to put an x inside a V. I would like x to be in the empty space inside the letter V. I guess I need to put V in a box, then x ...
8
votes
1answer
224 views

How to create \Delta with dot in it?

I am just looking for ways to write different \Delta´s (so many different variants of the Alexander polynomial). So I came up with the idea to have a dot in it. But the problem I noticed is, if I ...
7
votes
7answers
4k 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 ...
7
votes
3answers
9k 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.
7
votes
3answers
402 views

Superimpose letter on integral symbol

Good Afternoon all, I am trying to typeset a symbol that I have been using to represent the integral of a regulated function. This symbol is the standard integral symbol, with the letter "R" ...
7
votes
2answers
156 views

Combine two symbols to one fully scalable

I have to put a colon inside a bigcup symbol, so that the result is treated exactly like the latter. I tried different approaches following various posts here and on other places. The best result ...
7
votes
2answers
425 views

How can I underline mathematics using a harpoon of variable size?

I am a new user of LaTeX. I want to underline the answers to mathematics problems using a \rightharpoondown symbol. If possible, I would like a \rightharpoondown of variable size, as in the image ...
7
votes
2answers
515 views

Symbols for four and five vertical dots

I am very new to latex, but have spent hours trying without success to figure this out. I need symbols for both 4 and 5 vertically stacked dots. I know the commands for 1 dot (\cdot), and 3 dots ...
7
votes
1answer
5k 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
3k views

How do I get a equals sign under letters?

To show that a letter is a matrix my math book puts a equals sign under the letter. How do I do this?
6
votes
3answers
213 views

Nesting outlined boxes in math mode (formulas from Laws of Form)

I want to type-set some formulas from Spencer-Brown's Laws of Form using the nested cross formatting, and preferably using math mode, at times inlined into a paragraph. E.g. the following: So what ...
6
votes
3answers
299 views

Combine blacktriangle and blacktriangledown

I need to combine \blacktriangle and \blacktriangledown so that I get the following result: I already tried $\stackrel{\blacktriangle}{\blacktriangledown}$ but then the triangle pointing up is ...
6
votes
3answers
471 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
1k 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 ...
5
votes
3answers
519 views

How do I write logical iff symbol?

I'm currently hearing a lecture about formal systems (a computer science lecture). The lecturer makes a symbol that is written like overlying < and >: Every time when he draws it, he says ...
5
votes
2answers
4k 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 ...
5
votes
3answers
315 views

Can one break stackrel text into multiple lines?

I'm writing something up where I want to be explicit about some elementary operations I'm performing. I have an arrow between matrices with some text above the arrow showing what I'm doing. The text ...
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. ...
5
votes
2answers
189 views

Minus-like sign with stuff on top

I want to create an operator that works like a minus sign (including the spacing), but has the characters res on top (in \textrm mode). The length of the minus sign should be adjusted to look like ...
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} $\overset{\text{a}}{\text{b}}$ \\ $\underset{\text{c}}{\text{d}}$ ...
5
votes
5answers
241 views

add (a little bit long) comment on the equal sign?

There are posts here explained how to Add a comment on top of "equal" and "approximate" symbols , the idea is to use \stackrel{text}{=}, however, if the text is a bit long, for ...
5
votes
2answers
114 views

Need good looking replacement for \widetilde{s'} (to mark something with a prime)

Throughout my document I have several formula elements named s with variants marked as s'. Furthermore, I need to mark these using some other means. Currently, I use \widetilde, giving me ...
5
votes
3answers
129 views

Vertical spacing problems with a custom math symbol in LaTeX

I need to have a few custom math symbols by adding different number of dots on top of the standard \preceq math symbol. So, I have done this as follows: ...
5
votes
1answer
354 views

Placing text below other text

How can I place some text centered below other text on the line? I want to create similar to results to what is found in the ruby package, but instead of placing text above, the extra text is put ...
5
votes
1answer
70 views

Stacking arrays

I want to reproduce something called the tower notation: I have found out that I can make the tables like this: \begin{array}{c|c} S & S\\ S & S\\ \hline \multicolumn{2}{c}{DP\bs S}\\ ...
4
votes
2answers
950 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 ...
4
votes
2answers
104 views

like \rightleftarrows from amssymb, but with hook and twohead, respectively

I would like to have a symbol that looks like the symbol \rightleftarrows from amssymb, but I want the morphism to the right to be a twoheadrightarrow and the morphism to the left to be a ...