1.π (Pi; periphery/周长) March 14 marks Pi Day, the holiday commemorating the mathematical constant π (pi), written numerically as 3.141592+. Since mathematic notation is a language that uses symbols from a multitude of alphabets and typefaces, it seem
参考: Write math and make a box with alltt environment LaTex Verbatim 环境下使用数学符号 在 Verbatim 环境下使用数学符号,需要借助额外的宏包,fancyvrb.例如: \documentclass{article} \usepackage{fancyvrb} \begin{document} \begin{Verbatim}[commandchars=\\\{\}, codes={\catcode`\$=3\catcod