I am using \mathcal{T} to denote types in my paper. For unit type I want to use something like \mathcal{1} but for some reason it renders as infinity symbol. How can I get a number 1 in mathcal font.
[Tex/LaTex] Why mathcal{1} shows as infinity
mathcal
Related Solutions
I have that book in .pdf version and the font is Lucida New Math (Symbols).
If you have the Lucida New Math font installed as type 1, you can go as LaRiFaRi says in the above comment.
Otherwise, you have probably Lucida Calligraphy installed as .ttf as I have.
In this case, you can use xelatex or luatex for compiling.
This is an example using that font:
\documentclass{article}
\usepackage{unicode-math}
\setmathfont[range={\mathcal}]{Lucida Calligraphy}
\begin{document}
$\mathcal{ABCDEFGHIJKLMNOPQRSTUVWXYZ}$
\end{document}
Output
The problem is that it is a verbatim environment, so everything is verbatim. To make it not verbatim you have to use the option escapeinside:
\lstset{escapeinside={@(}{)@}}
so that any code between @(...)@ is escaped back to LaTeX.
Best practice is to use more than one character for escaping to avoid ambiguity. Also try to choose a combination that will not appear in your code. In python, for example, using :(...): would be a bad idea because of the syntax of the for loop.
\documentclass{beamer}
\usepackage{listings}
\usetheme{Madrid}
%\lstset{language=Python}
\lstset{escapeinside={@(}{)@}}
\begin{document}
\begin{frame}[fragile]
\begin{block}{Algorithm}
\begin{lstlisting}
@($\mathcal{Q}$)@
for i in range(10):
foo(arg1, arg2)
bar = qux()
\end{lstlisting}
\end{block}
\end{frame}
\end{document}
Best Answer
TL;DR: Use
\mathds{1}with thedsfontpackage instead of\mathcal{1}.I have previously used
$\mathcal{1}_{bla}$for indicator variables that are 1 if and only if "bla" holds true. This worked fine in IEEE templates:But broke in another KOMA-based template, where it also just showed the infinity symbol. As mentioned in the comments,
\mathcalis only properly defined for capital letters.A simple solution for me was to use the
dsfontpackage (\usepackage{dsfont}in preamble), which allows the desired styling with\mathds{1}_{bla}. The result looks like this (different equation than above but similar styling of the indicator variable):