% Math Support
\usepackage{mathrsfs}
\usepackage{amsmath}
\usepackage{amssymb}

% Use PostScript fonts
%
% Since mathptmx is included the following symbols are saved to prevent
% from a clash, even if the symbols actually appear as black boxes...
%
\let\stdcoprod=\coprod
\let\stdamalg=\amalg
\let\stdjmath=\jmath
\usepackage{mathptmx}
\let\coprod=\stdcoprod
\let\amalg=\stdamalg
\let\jmath=\stdjmath
\usepackage[scaled=.90]{helvet}
\usepackage{courier}

% More characters
\usepackage{pifont}
\usepackage{textcomp}