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%%% ====================================================================
%%% amssym.def + pxfonts (JM+SW) 09.03.2001. Public domain
%%% macros borowed from amssym.def ver. 2.2b and amstex.tex ver. 2.1
%%% by American Mathematical Society
%%% This file must not be changed. However, if you do make changes,
%%% you first rename it to some other name.
%%% ====================================================================
\expandafter\ifx\csname amsqpx.def\endcsname\relax \else\endinput\fi
\ifx\PT\undefined\def\PT{pt}\fi
%
% Store the catcode of the @ in the csname so that it can be restored later.
\expandafter\edef\csname amsqpx.def\endcsname{%
\catcode`\noexpand\@=\the\catcode`\@\space}
% Set the catcode to 11 for use in private control sequence names.
\catcode`\@=11
%
% Include all definitions related to the fonts msam, msbm and eufm, so that
%%% ^pxsya^pxsyb ^pxmia (JM)
% when this file is used by itself, the results with respect to those fonts
% are equivalent to what they would have been using AMS-TeX.
% Most symbols in fonts pxsya and pxsyb are defined using \newsymbol;
% however, a few symbols that replace composites defined in plain must be
% defined with \mathchardef.
\def\undefine#1{\let#1\undefined}
\def\newsymbol#1#2#3#4#5{\let\next@\relax
\ifnum#2=\@ne\let\next@\pxafam@\else
\ifnum#2=\tw@\let\next@\pxbfam@\fi\fi
\mathchardef#1="#3\next@#4#5}
\def\mathhexbox@#1#2#3{\relax
\ifmmode\mathpalette{}{\m@th\mathchar"#1#2#3}%
\else\leavevmode\hbox{$\m@th\mathchar"#1#2#3$}\fi}
\def\hexnumber@#1{\ifcase#1 0\or 1\or 2\or 3\or 4\or 5\or 6\or 7\or 8\or
9\or A\or B\or C\or D\or E\or F\fi}
\font\tenpxa=pxsya at 10\PT % msam10
\font\sevenpxa=pxsya at 7\PT % msam7
\font\fivepxa=pxsya at 5\PT % msam5
\newfam\pxafam
\textfont\pxafam=\tenpxa
\scriptfont\pxafam=\sevenpxa
\scriptscriptfont\pxafam=\fivepxa
\edef\pxafam@{\hexnumber@\pxafam}
\mathchardef\dabar@"0\pxafam@39
\def\dashrightarrow{\mathrel{\dabar@\dabar@\mathchar"0\pxafam@4B}}
\def\dashleftarrow{\mathrel{\mathchar"0\pxafam@4C\dabar@\dabar@}}
\let\dasharrow\dashrightarrow
\def\ulcorner{\delimiter"4\pxafam@70\pxafam@70 }
\def\urcorner{\delimiter"5\pxafam@71\pxafam@71 }
\def\llcorner{\delimiter"4\pxafam@78\pxafam@78 }
\def\lrcorner{\delimiter"5\pxafam@79\pxafam@79 }
% Note that there should not be a final space after the digits for a
% \mathhexbox@.
\def\yen{{\mathhexbox@\pxafam@55}}
\def\checkmark{{\mathhexbox@\pxafam@58}}
\def\circledR{{\mathhexbox@\pxafam@72}}
\def\maltese{{\mathhexbox@\pxafam@7A}}
\font\tenpxb=pxsyb at 10\PT % msbm10
\font\sevenpxb=pxsyb at 7\PT % msbm7
\font\fivepxb=pxsyb at 5\PT % msbm5
\newfam\pxbfam
\textfont\pxbfam=\tenpxb
\scriptfont\pxbfam=\sevenpxb
\scriptscriptfont\pxbfam=\fivepxb
\edef\pxbfam@{\hexnumber@\pxbfam}
\def\Bbb#1{{\fam\pxbfam\relax#1}}
\def\widehat#1{\setbox\z@\hbox{$\m@th#1$}%
\ifdim\wd\z@>\tw@ em\mathaccent"0\pxbfam@5B{#1}%
\else\mathaccent"0362{#1}\fi}
\def\widetilde#1{\setbox\z@\hbox{$\m@th#1$}%
\ifdim\wd\z@>\tw@ em\mathaccent"0\pxbfam@5D{#1}%
\else\mathaccent"0365{#1}\fi}
\font\tenpxfm=pxmia at 10\PT % eufm10
\font\sevenpxfm=pxmia at 7\PT % eufm7
\font\fivepxfm=pxmia at 5\PT % eufm5
\newfam\pxfmfam
\textfont\pxfmfam=\tenpxfm
\scriptfont\pxfmfam=\sevenpxfm
\scriptscriptfont\pxfmfam=\fivepxfm
\def\frak#1{{\fam\pxfmfam\relax#1}}
\let\goth\frak
% Restore the catcode value for @ that was previously saved.
\csname amsqpx.def\endcsname
\endinput
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