{symbols} is about specific non-alphabetic symbols or math symbols, e.g., about looking-up, constructing, or using symbols. For questions about {fonts} or alphabetic {characters} use the respective tag instead.

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16
votes
3answers
841 views

Detexify couldn't help me find >— and —<, can you?

These symbols are like arrow, except the arrow heads are inverted. Some ASCII art: >-- or --< Could you help?
16
votes
2answers
7k views

\star vs. \ast in formulas. Which one to use?

When you read a formula aloud you say "r and r-star are related by this formula". If you write this formula down you normally write an r with a six-handed star, which would actually be an asterisk and ...
14
votes
2answers
983 views

Looking for an appropriate icon for figures, one for tables and one for pages referring

Do you know any package that provides appropriate icon for figures, one for tables and one for pages referring(for example a camera and paper icon, ifsym package provides a paper icon but is there any ...
12
votes
3answers
427 views

Which symbols need to be escaped in ConTeXt?

When writing "$" or "%" in a document, one must used \$ and \% so that they will be interpreted as symbols which should be displayed along with the text. What other symbols need to be escaped in ...
9
votes
1answer
153 views

How to use a custom, scalable, symbol in LaTeX

I want to use a custom symbol in my document that is treated like any other letter or math symbol by LaTeX. I do not want to superimpose existing symbols in order to create a new one but rather create ...
9
votes
2answers
3k 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 ...
6
votes
1answer
935 views

Using \leftroot{}, \uproot{} with closed square root symbol

As mentioned in this answer to Nice-looking p-th roots the amsmath package provides \leftroot{} and \uproot{} which allow you to move the position of the root to the left, and up in small increments. ...
3
votes
2answers
475 views

How to horizontally merge two symbols?

This is a very short question and hopefully there's a short answer. I know I can use \stackrel{top}{bot} to vertically merge two symbols into one with top on top and bot on the bottom. Is there ...
12
votes
4answers
8k views

Include < (fewer than) and > (greater than) inequality symbols

I'd like to include the < and > symbols into my document. First I tried to just type it in. But after generating the document I saw only an inverted ? instead of the > symbol. That's why I ...
11
votes
3answers
588 views

The line produced by \not looks bad on wider symbols

When using \not together with wider symbols such as \Leftrightarrow the diagonal line produced by \not is placed too far to the left. How can the line be properly aligned? For example the following ...
10
votes
5answers
986 views

A symbol for the field of formal Laurent series

In my area of math one of the objects that pops up quite often is the field of all formal Laurent series. Now the trouble is that the notation for this field is $\mathbf{C} (( t ))$. Now the two ...
9
votes
4answers
165 views

Configurable spacing after \dots

LaTeX adds some space after the ellipsis \textellipsis. This is enhanced by ellipsis package, which only adds space before certain characters (and also gives the option to configure “easily” the ...
9
votes
1answer
5k views

Symbol for “corresponds to” (equals sign with hat) [duplicate]

Recently in some LaTeX documentation I noticed that there is a special LaTeX command for the symbol meaning "corresponds to", which is similar to an equal sign with a hat on top. \hat{=} or ...
9
votes
1answer
936 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 ...
9
votes
5answers
1k views

More aesthetic (perhaps shallower) superscript check symbol

The standard way to produce a superscript check mark in latex would be something like $\mathcal{E}^{\vee}$ (this is a notation often used for the dual of a locally free sheaf $\mathcal{E}$.) An ...
9
votes
2answers
3k views

AC source symbol in TikZ circuits.ee.IEC library

I can draw an AC source manually: \begin{tikzpicture} \draw (0,0) sin (1,1) cos (2,0) sin (3,-1) cos (4,0); \draw (2,0) circle (2.5); \end{tikzpicture} How do I declare an ACsource symbol so ...
8
votes
3answers
3k views

Rotation in \ddots

I want to write a math equation that needs power of dots. I tried these code {2^{2^{2^{\ddots^{2}}}}} But the dots needs to be rotated
7
votes
3answers
900 views

The modulo two sum sign in LaTeX

I would like to know how I can obtain the 'modulo two sum' sign (unicode 2A0A i.e., the letter sigma with a circle in its middle). I know I can obtain it by using the unicode-math package. But does ...
6
votes
4answers
4k views

Changing “-” to \textendash

I have a large LaTeX document, where hyphens are typeset with a single dash ("-") throughout. In my font, this shows up as a bold and vertically slightly off-center blob, but I'd like it to look like ...
5
votes
4answers
2k views

A bold plus symbol in math mode

I'd like to use a different + symbol in addition to + in math mode, preferably one which is just bolder than the standard one. I'm currently using \pmb{+} from the amsbsy package, but it's a bit too ...
5
votes
3answers
753 views

Less pointy angle brackets

I was looking for a way to beautifully display UML stereotype titles including angle brackets like you can see here: What I came up with is $\mathtt{\ll metaclass\gg}$, however, as you can see here ...
2
votes
1answer
881 views

Is a cupdot symbol available in amsmath? [duplicate]

I'm looking for a command in amsmath that makes something like \cupdot in MnSymbol (I hope spell it right...). Look at the picture below: i.e. a command that puts a dot instead of the "+". One ...
2
votes
1answer
3k views

which package for \oiint symbol

I have some code which uses the \oiint symbol. However there are many packages that provide this command. Most of for special fonts. I am using lmodern however and want a package that provides the ...
12
votes
5answers
2k views

Ellipsis with a period/fullstop

While quoting how ellipsis should be used if few sentences are omitted in between. (ommissions are not clauses or words or phrases, but sentences). For example if there is a passage like: This is a ...
9
votes
2answers
2k views

How to use an underscore in a filename

With the commands \openout and \write I output text into a file. I want this file to have a name of containing an underscore (eg. name_01.txt), but I'm unable to get the underscore in the filename. My ...
8
votes
2answers
889 views

How can I typeset an extra-long \textbar?

This is what I get with \textbar: This is what I want it to look like:
6
votes
2answers
891 views

Create my own mapping for XeTeX fonts

I'm trying to create mapping files, to make use of Cambria Math italic calligraphic and double stroke letters in Plain XeTeX. However, I'm unable to do so. This is what I tried to create for the ...
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. ...
3
votes
2answers
3k views

How can I put musical clefs in the middle of text?

I'm setting a document that includes some music; I'm using lilypond-book for the musical examples. However, there are some points where the author has inserted a musical symbol in the text; I'm using ...
65
votes
12answers
49k views

What is the best symbol for vector/matrix transpose?

What is the best or most popular symbol for vector/matrix transpose? I have used simply ^T, for example $c^T x$. I think it is ugly, mainly because it is a little too big compared with vector ...
48
votes
1answer
38k views

X mark to match checkmark

I am looking to have an X mark that compliments the \checkmark symbol in the amsmath package. I've had a look at some in symbols-a4.pdf but can't seem to find the matching one! What symbol works well? ...
46
votes
1answer
54k 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 ...
31
votes
5answers
12k views

What's a good way to write “x does not divide y”?

The way I currently do it is $x \not | y$, which looks awful. There's got to be something better available.
26
votes
5answers
6k 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?
16
votes
3answers
2k views

How do I change the font of a letter?

This is a partial re-asking of my question Can I change the font and colour of a letter permanently?. The answers there focussed on the colour aspect of what I wanted. I also want to be able to ...
21
votes
4answers
900 views

How to turn a figure into a symbol?

I have some figures, for e.g., finite graphs, lattices or knots, that I have drawn in eps (or pdf) format. I would ideally love to have maps indexed by these figures. However, these figures are not ...
19
votes
10answers
2k views

What useful web services are out there?

Looking at this question, I wonder what good and useful web services are out there. For example the LaTeX symbol classifier looks interesting. You can draw a symbol with your mouse and get back the ...
10
votes
2answers
19k views

3 dots in matrix

I was wondering if anyone knew how to draw 3 dots in a matrix that go in a diagonal way usually to represent that element flow similarily in the slots. I know there's one that goes in the bottom right ...
14
votes
1answer
7k views

How to typeset block matrices?

I need to typeset a block matrix that is made of a 2X2 structure of blocks such that the (1,1) block and the (2,2) blocks are zero and the (1,2) and the (2,1) blocks are non-zero (and happen to have a ...
29
votes
1answer
9k views

\varepsilon vs. \epsilon

I cannot remember anyone writing the letter epsilon in any other way than \varepsilon in any math class; but in LaTeX \epsilon and \varepsilon are different symbols. Do any of you know why there are ...
25
votes
4answers
2k views

How to get a good “divisible by” symbol?

In addition to the "divides" relation, denoted b | a, there is also a "divisible by" relation expressing the converse (a is divisible by b), often designated with three vertical dots. Up until now, ...
16
votes
4answers
436 views

Problems with custom symbols

I'm trying to include some custom symbols in LaTeX. So I have some vector graphic images that I export to PDF, such as: and I include them in LaTeX using ...
24
votes
3answers
38k views

Is there a circle symbol?

Is there a circle symbol for the composition of two functions? Or do I have to resort to using other ways to represent that?
20
votes
4answers
2k views

Underscore in textmode vs mathmode

I use _ character often in text mode, so I changed category of underscore: \catcode\_=12, but that applies also to mathmode and now I'm unable to make subscripts with underscore in mathmode. Is there ...
15
votes
3answers
1k views

Writing { and } to a file with LaTeX

How can the special characters { and } be written literally to an external file in LaTeX, without being balanced? Obviously the following does not work: \immediate\write\my@outfile{{} ...
5
votes
2answers
3k views

How to typeset mathematical symbols (with index, etc) always the same way and easily?

When I started to write my thesis I decided not to make things too complicated and to just type mathematical symbols each time they appear, like $V_{s1}$ or ${CV_{D,\, \mathrm{Si}}^{*}}$ Now, finally ...
32
votes
4answers
24k views

How to insert pipe symbol in (La)TeX?

How to insert pipe symbol | in TeX (LaTeX)? I have tried this sample with pdflatex tmp.tex \documentclass{extarticle} \begin{document} \textpipe \end{document} And it give undefined control ...
21
votes
3answers
1k views

How do you swap the commands for two symbols?

I find that I much prefer \varphi to \phi and generally would rather use the \varphi than the \phi. But it's three more characters to type \varphi instead of \phi, which is most troublesome. So I ...
19
votes
3answers
1k views

Regularized Product Symbol

How so I make a regularized product symbol like in Deninger's papers. It looks like a II, only large like $\prod$ only with a bottom on it too, as in the following paper abstract:
14
votes
2answers
353 views

Smaller membership symbol

To mean that x is an element of X, we can write x \in X. However, in the standard packages, the membership symbol that results is too big; it draws too much attention to itself. This is especially ...