\newcommand in math code

[neozhaoliang]

\newcommand{\mycommand}[1]{\mathcal{#1}}

does not work, it says it has dropped the math mode. How can I use self-defined commands in math mode?

[johannesbottcher]

This has nothing to do with the template. Please ask at a general place like TeX.stackexchange.com or latex-community.org. Am 04.04.2017 15:48 schrieb "neozhaoliang" <notifications@github.com>:

…

\newcommand{\mycommand}[1]{\mathcal{#1}} does not work, it says it has dropped the math mode. How can I use self-defined commands in math mode? — You are receiving this because you are subscribed to this thread. Reply to this email directly, view it on GitHub <#121>, or mute the thread <https://github.com/notifications/unsubscribe-auth/AH4Ejmd4wF89RsyGElmgVGghO0ZlJkBbks5rskpBgaJpZM4My4o4> .

[johannesbottcher]

I cannot reproduce the problem by the way:

\documentclass{Classes/PhDThesisPSnPDF}
\newcommand{\mycommand}[1]{\mathcal{#1}}
\begin{document}
$\mycommand{L}$
\end{document}

You will need to add a minimal working example to the question you will ask on any other site. Please crosslink the questions.

[neozhaoliang]

Hi thanks for the reply. I have fixed the problem. The template has changed the default behavier of Latex:

if you put your self-defined math commands in a separate file command.tex and use the \include it will report the error. One should use \input instead.