原文链接:http://tex.stackexchange.com/questions/15984/wh--at-symbol-should-one-use-for-a-set-complement
示例:documentclass{minimal}usepackage{amsmath}usepackage{amssymb}
newcommand{eqn}{[ stcomp{(A cup B)} = stcomp{A} cap stcomp{B}]}
begin{document}newcommand{stcomp}[1]{{#1}^complement} eqnrenewcommand{stcomp}[1]{overline{#1}} eqnrenewcommand{stcomp}[1]{{#1'}} eqnrenewcommand{stcomp}[1]{widetilde{#1}} eqnrenewcommand{stcomp}[1]{{#1}^{sim}} eqnrenewcommand{stcomp}[1]{{#1}^{mathsf{c}}} eqnrenewcommand{stcomp}[1]{Xsetminus{#1}} eqnend{document}Of all of these I've used^complementthemost, and the overbar is the one I've seen the most. I have to sayI really like your^mathsf{c}implementation.

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