定理风格设计

Question

我正在尝试使用下面的代码设计一个定理样式。但是，我希望能够在短语后面写出定理的名称。我的意思是我希望有

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定理 1（第一定理）

啦啦啦

在框架顶部的栏上。您有什么想法吗？谢谢！

\documentclass{article}

\usepackage{lipsum}
\usepackage[framemethod=tikz]{mdframed}
\usetikzlibrary{shadows}

\mdtheorem[roundcorner=5pt,backgroundcolor=gray!10,
 shadow=true,frametitlerule=true,
 middlelinewidth=1pt,frametitlerulewidth=1pt,
innertopmargin=\topskip,
apptotikzsetting={\tikzset{mdfbackground/.append style={left color=gray!10!white,right color=white},
mdfframetitlebackground/.append style ={left color=white,right color=gray!10!white}}}]{Theorem}{Theorem}

\begin{document}    

\begin{Theorem}
If $a^m=a^n$ then $m=n$ or $a=1$ or $a=-1$ and $m$, $n$ are even integers.
\end{Theorem}
\end{document}

Answer 1

% arara: pdflatex

\documentclass{article}
\usepackage[framemethod=tikz]{mdframed}
\usetikzlibrary{shadows}

\mdtheorem[roundcorner=5pt,backgroundcolor=gray!10,
 shadow=true,frametitlerule=true,
 middlelinewidth=1pt,frametitlerulewidth=1pt,
innertopmargin=\topskip,
apptotikzsetting={\tikzset{mdfbackground/.append style={left color=gray!10!white,right color=white},
mdfframetitlebackground/.append style ={left color=white,right color=gray!10!white}}}]{Theorem}{Theorem}

\begin{document}    

\begin{Theorem}[(First Theorem)]
If $a^m=a^n$ then $m=n$ or $a=1$ or $a=-1$ and $m$, $n$ are even integers.
\end{Theorem}
\end{document}