{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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3
votes
1answer
2k views

vertical equal sign

I am looking to create a vertical equal sign that might function similarly to an underbrace. I often use this symbol when taking notes on paper. (x+z) + (y+d) = 10 || || 5 5 The ...
2
votes
0answers
88 views

How do I prevent pdflatex from making strange symbols when text is copied? [duplicate]

I use LyX to create my LaTeX files. Recently, when I've used LyX's pdflatex to view my file, the text looks fine, but when I attempt to copy it, I just get strange symbols. If I use LyX's dvipdfm, I ...
6
votes
1answer
4k views

Checkmark error in amsmath [duplicate]

This page says that amsmath supports the \checkmark symbol. However, when I try to implement this \documentclass[12pt]{article} \usepackage{amsmath} \begin{document} $\checkmark$ \end{document} ...
0
votes
2answers
127 views

Latex Code for Symbol [duplicate]

Could someone please help me with the Latex code for the symbol below?:
3
votes
1answer
309 views

Constructing general ligatures

I know that LaTeX has macros \ae, \oe etc. for the standard ligatures (i.e. æ, œ). Is there a more general way to construct ligatures in the equation environment? I'm working in the language of ...
2
votes
1answer
331 views

Prevent large line spacing on lines containing “high” symbols

I am using the notation $\widetilde{\mathcal{F}_K}$ quite extensively in my paper. In each line where it appears, because the tilde makes the symbol a little higher than the other symbols, the line ...
1
vote
1answer
298 views

Norm symbol in subscripts of index

I found this related topic but it didn't seem to fix my problem: How to fix symbol index entry? I was using good old \|\cdot\| for norms but my index wasn't liking it. So then I did the new command ...
3
votes
1answer
2k views

\includegraphics{*.pdf } substitutes in-figure symbols

I am using TeXstudio with its default settings. My figure is saved as PDF because I was unable to include *.eps because of the Unknown graphics extension: .eps-error. The figure opens without faults ...
1
vote
0answers
38 views

Regarding symbol for cross product [duplicate]

May i know the latex syntax for the center symbol (circle with cross)?
2
votes
1answer
76 views

Automate replacement of `\not` when in `\bm` mode

Hendrik Vogt has provided a \longnot macro to alleviate the issues related to Interaction of \boldmath and \not. This seems to work fine, but I run into a snag when I try to automatically use ...
1
vote
1answer
2k views

Which package is required for \Z to work as the symbol for the set of integers? [duplicate]

According to http://www.proofwiki.org/wiki/Symbols:Z#The_Set_of_Integers, \Z should produce the symbol for the set of integers, but I have not been able to find the package that enables this feature. ...
4
votes
1answer
346 views

How do I generate a symbol that is like ː (\textlengthmark) with a small circle exactly in the middle?

I would like to generate a symbol that is tipa's \textlengthmark with a small circle overlaid perfectly in the middle, so that the symbol has vertical and horizontal symmetry. How do I do this? (I ...
12
votes
3answers
2k views

Symbol for external links

I'm using the hyperref package in my document to provide hyperlinks to external documents. However, I don't want to have the links coloured or underlined, because I find this usually ugly and ...
0
votes
1answer
3k views

What is the syntax to get the “CurlyPhi” symbol?

What is the syntax to get the "CurlyPhi" symbol in TeX/LaTeX? To get phi we use, $\Phi$.
4
votes
1answer
202 views

Matrix ball construction table

I want to draw a table similar to this \begin{tabular}{ c | c | c} $\bigcirc$ & & \\ \hline & $\bigcirc$ & \\ \hline & & $\bigcirc$ \\ \end{tabular} for the ...
1
vote
0answers
61 views

Looking for “^” symbol [duplicate]

What is the correct symbol for ^ in math mode? I can't type ^ as it appears as superscript symbol
1
vote
0answers
3k views

Symbol for “such that” (not in set) [duplicate]

If a is a set a \leftarrow { b| b must satisfies property} but if a is an element a \leftarrow b| b must satisfies property is this a usual notation? Or what other symbol should I use for the ...
7
votes
1answer
350 views

Problem of superimpose and how to change legend symbol

Given the plot as follows I have two problems: a and b are superimposed on each other, how should I make this clear on the graph? How could I change legend c to other icons like star? (It looks a ...
5
votes
1answer
2k views

What is a good method for producing a unary plus/minus sign that always works?

Say I have a macro that does something in math mode (say, change the mathalphabet). This macro, \somecommand, takes one argument. I might want use is like this, feeding an empty argument into it: ...
12
votes
2answers
579 views

Create a font table for all available characters for a particular font

Similar to the question: Lualatex: Font table with examples I have several ornamental fonts and I'd like to create key maps. That is, I want to know what symbol the letter a maps to by having a nice ...
2
votes
1answer
90 views

Indexing \int with amsmidx

I've used amsmidx to create a separate notational index. \usepackage{amsmidx} \makeindex{idx} \makeindex{nidx} \newcommand{\idx}[1]{\index{idx}{#1}} \newcommand{\nidx}[1]{\index{nidx}{#1}} I need ...
3
votes
1answer
583 views

Symbol to represent a key

Does anybody knows a LaTeX command that represents a key, like this?
11
votes
1answer
257 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:
1
vote
0answers
238 views

How to write average of a function? [duplicate]

Just do not know how to write the average of a function. The symbol look like a integral sign with a short bar in the middle. It means integral of a function over a ball divide by the measure of the ...
1
vote
0answers
200 views

How to bring beauty to this pgfplot? [closed]

We are making a plot as follows: \documentclass{standalone} \usepackage{pgfplots} \usetikzlibrary{calc,shadings} \usepackage{pgfplots} \begin{document} \begin{tikzpicture} \def\xmin{0} ...
10
votes
1answer
854 views

Interaction of \boldmath and \not

It seems that using \boldmath (or \bm) along with the \not does not quite work so well. Here is an example using \not\subseteq and \not\le where the line representing negation does not stretch ...
14
votes
2answers
22k views

Solid black box in the proof environment

I am using \documentclass[12pt]{article} \usepackage{amsmath} \usepackage{amssymb} \usepackage{amsthm} \begin{document} \begin{proof} A = B \end{proof} \end{document} and an empty square box ...
1
vote
1answer
2k views

Natural numbers symbol causes an error

My latex code is $(X_i)_{i \in \N}$ and I get this error: ! Undefined control sequence. of $(X_i)_{i \in \N Can anybody tell me why? I have included the amssymb package: \usepackage{amssymb}
32
votes
1answer
14k 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 ...
0
votes
1answer
110 views

How to render ->

I tried to render the arrow symbol -> using \->, but it didn't work. I tried \-\> as well, which didn't work either. Both compiled well but didn't generate the right symbol. I suspect it ...
1
vote
1answer
8k views

Less AND greater than symbol [duplicate]

I need to know, if it's possible, how I can write a unique "less AND greater than" symbol in LaTeX: for example X >< 5.
3
votes
1answer
5k views

how to insert \Delta with normal text

If I do The equation is \Delta I/I= k = constant, I get Missing $ inserted. $ l.26 The equation is \Delta
7
votes
1answer
599 views

Typesetting inline Penrose/Cvitanovic tensor diagrams (birdtracks)

In the 50's, Roger Penrose invented a private graphical notation for tensors, which he later published. Wikipedia has a short description. It's basically a directed graph with some labels on it and ...
3
votes
0answers
116 views

Font selection for mathematical documents [duplicate]

I am currently making a skeleton for my thesis. Since it will be in physics, it has to deal with a lot of mathematics. I think there are two ways of making it right. Choose a font for text and a ...
1
vote
0answers
53 views

How to write flipped \in? [duplicate]

How to write a horizontally flipped version of \in in mathematics mode? Google gives me \reflectbox and something like that, but I feel that there is a more straightforward way to write it since the ...
14
votes
2answers
1k views

Allow underscore in PGFPlots tick labels read from table

I'm trying to use the text data from a table column as the tick labels in a plot. The text data contains underscores, which makes LaTeX throw a Missing $ inserted error. I'd usually get around this by ...
5
votes
1answer
911 views

Symbol for chapter endings?

Is there an accepted way of marking a chapter ending? Right now I have new chapters start on new pages, but that leaves the last page of the previous chaater looking rather unfinished. I know that ...
5
votes
1answer
178 views

Ideographic “bullet” (for separating entities within proper nouns) in xeCJK

In 20th century Chinese typography, within transliterated proper nouns and between the name of a book and its sections, a sort of centered bullet is sometimes used (see illustration). This symbol is ...
12
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 ...
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?
7
votes
3answers
255 views

How to define a new command for guillemets marks [duplicate]

Possible Duplicate: babel shorthand "| doesn’t work in macros I would like to define a new command for guillemets marks. I know how to obtain them in LaTeX and those I would like to ...
8
votes
1answer
3k views

Undefined control sequence \coloneqq

I'm trying to export a PDF of a LyX document (it has never caused a problem before). Below I have posted pictures of the error message along with the equation LyX highlighted for me. I don't know what ...
3
votes
2answers
643 views

Adding symbols at the end(s) of a horizontal line

I'm looking for variations of the symbol \relbar, or any other horizontal line that is about as along as a standard-length arrow. In particular, I'd like to be able to add arrowheads, as in ...
3
votes
1answer
361 views

ifsym package problem

I am using a template from the following web-page: Template of Latex I came up with a problem where I want to use "ifsym" package symbols and I could not get them. Actually, I want to use a symbols ...
0
votes
0answers
20 views

Insert the special character H for hypergraphs in Kile [duplicate]

Possible Duplicate: How to look up a symbol? I am editing my documents in Kile. Recently I've worked with hypergraphs. Almost articles as well as books used the character H to denote a ...
11
votes
1answer
912 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 ...
0
votes
0answers
42 views

How to handle > character? [duplicate]

Possible Duplicate: Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation or question mark? I have some > and < character in ...
2
votes
1answer
1k views

How do you get a lower or higher tilde/~?

I want to presents hours and say from hour x to hour y by using sample '~'. Please guide me how I can present the symbol "~"? In contrast to How does one insert a backslash or a tilde (~) into ...
1
vote
1answer
890 views

How do I create the universe of discourse symbol with LyX?

I've been using OpenOffice and/or MS Word to do my college assignments, but since I started this new discrete math course, I'm finding myself very annoyed with the math formula options in those ...
5
votes
2answers
241 views

Creating symbols: $\oeq$ and $\oneq$

How do I create my own custom symbols? I want to make a symbol similar to that of $\otimes,\ominus$, etc. It should be an equals sign enclosed by a circle, and also a slashed equals sign enclosed by ...