symbols
Ii am writing a short code, so I doubt anything else in the code is causing the problem. This is the problematic line of code:
\[ M_R := \max {|f(z)|: |z - z_0| = R }\le M\]
It doesn't show the curly braces. I've tried using \left{ and \right} but to no avail.
What should I do?
Thank you
You should separate input and output. If you want to print a symbol you at first need a font which contains it. If you want to use normal latex (it will work with xelatex too) you can e.g. use the dingbat font to get an anchor. If you want to use the symbol in the input you must declare it (I'm not sure if the ⚓ copy& paste correctly):
\documentclass[12pt]{article}
\usepackage[utf8]{inputenc}
\DeclareUnicodeCharacter{2693}{\anchor}
\usepackage{dingbat}
\begin{document}
\anchor ⚓
\end{document}
With xetex you can use e.g. dejavu sans (if you get the wrong glyph:make sure that you have only version of dejavu sans). Here too you can use commands/other notation if you don't want to use the symbol in the input:
\documentclass[12pt]{article}
\usepackage{fontspec}
\begin{document}
{\fontspec{DejaVu Sans Condensed} ^^^^2693 \char"2693 ⚓}
\end{document}
Load the bbm package.
\documentclass{article}
\usepackage{bbm}
\begin{document}
\[p(x) = q^{\mathbbm{1}(x = 1)}\]
\end{document}
Best Answer
The following are all considered special printing characters in LaTeX:
#$%&~_^\{and}. That is, they all tell LaTeX to do something; they're part of the language or syntax of LaTeX. In order to actually print any of these characters in the output, you have to "escape" the character. This is done by putting a\in front of the character. (There are a few exceptions to this. One is the character\, which you can print in the output with the command\textbackslash, since\\is a command used for line breaking in LaTeX. The other two exceptions are^and~, which can both be used for appending diacritic marks to letters, such as\^{o}and\~{a}, for example. You can print these in the output by\^{}and\~{}, respectively, though see this post for more considerations about typesetting the tilde.)Update: As @egreg points out in the comments, using thin spaces (
\,) and\lvertand\rvertfrom theamsmathpackage are best practices for typesetting mathematics. Here is an updated MWE that uses both thin spaces and\lvertand\rvert. The accompanying picture will allow you to compare the differences.As far as I can tell, at least in this case, there is no discernible differences between
|and\lvertand\rvert. The reason that using the latter two is considered a best practice is because they are delimiters.