环境标号书写



\documentclass{amsart} \usepackage{enumerate} \begin{document} \begin{enumerate}[({A}1)] \item blah \item blah blah \end{enumerate} \end{document}

 I for capital Roman numbers

  
  
  
  

   
   
   
   
i for small Roman numbers
   
   
   
   
1 for Arabic numbers
   
   
   
   
A for capital letters
   
   
   
   
a for small letters