我想在投影仪框架中添加证明结束的符号，如下图所示
我尝试如下
\documentclass[xcolor=dvipsnames]{beamer}
\usepackage{pifont}
\mode<presentation>
\usetheme{Madrid}
\begin{document}
\begin{frame}{Sketch of Proof}
The steps of our theorem are the following:
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\[ \qedhere\]
\end{frame}
\end{document}
答案1
如果您想要展示证明，请使用proof环境，然后 qed 符号将自动出现：
\documentclass[xcolor=dvipsnames]{beamer}
\usepackage{pifont}
\usetheme{Madrid}
\begin{document}
\begin{frame}
\frametitle{Sketch of Proof}
\begin{proof}
The steps of our theorem are the following:
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\end{proof}
\end{frame}
\end{document}
如果你想手动放置它，你可以使用\qed
\documentclass[xcolor=dvipsnames]{beamer}
\usepackage{pifont}
\usetheme{Madrid}
\begin{document}
\begin{frame}
\frametitle{Sketch of Proof}
The steps of our theorem are the following:
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}} ....
\hfill \qed
\end{frame}
\end{document}
答案2
\documentclass[xcolor=dvipsnames]{beamer}
\usepackage{pifont}
\usepackage{amssymb}
\usetheme{Madrid}
\setbeamertemplate{itemize items}{\textcolor[rgb]{1.00,0.00,1.00}{\ding{228}}}
\begin{document}
\begin{frame}{Sketch of Proof}
The steps of our theorem are the following:
\begin{itemize}
\item ...
\item ...
\item ...
\item ...
\end{itemize}
\hfill$\blacksquare$
\end{frame}
\end{document}