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-%%% ====================================================================
-%%% amssym.def + txfonts (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 amsqtx.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 amsqtx.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
-%%% ^txsya^txsyb ^txmia (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 txsya and txsyb 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@\txafam@\else
- \ifnum#2=\tw@\let\next@\txbfam@\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\tentxa=txsya at 10\PT % msam10
-\font\seventxa=txsya at 7\PT % msam7
-\font\fivetxa=txsya at 5\PT % msam5
-\newfam\txafam
-\textfont\txafam=\tentxa
-\scriptfont\txafam=\seventxa
-\scriptscriptfont\txafam=\fivetxa
-\edef\txafam@{\hexnumber@\txafam}
-\mathchardef\dabar@"0\txafam@39
-\def\dashrightarrow{\mathrel{\dabar@\dabar@\mathchar"0\txafam@4B}}
-\def\dashleftarrow{\mathrel{\mathchar"0\txafam@4C\dabar@\dabar@}}
-\let\dasharrow\dashrightarrow
-\def\ulcorner{\delimiter"4\txafam@70\txafam@70 }
-\def\urcorner{\delimiter"5\txafam@71\txafam@71 }
-\def\llcorner{\delimiter"4\txafam@78\txafam@78 }
-\def\lrcorner{\delimiter"5\txafam@79\txafam@79 }
-% Note that there should not be a final space after the digits for a
-% \mathhexbox@.
-\def\yen{{\mathhexbox@\txafam@55}}
-\def\checkmark{{\mathhexbox@\txafam@58}}
-\def\circledR{{\mathhexbox@\txafam@72}}
-\def\maltese{{\mathhexbox@\txafam@7A}}
-
-\font\tentxb=txsyb at 10\PT % msbm10
-\font\seventxb=txsyb at 7\PT % msbm7
-\font\fivetxb=txsyb at 5\PT % msbm5
-\newfam\txbfam
-\textfont\txbfam=\tentxb
-\scriptfont\txbfam=\seventxb
-\scriptscriptfont\txbfam=\fivetxb
-\edef\txbfam@{\hexnumber@\txbfam}
-\def\Bbb#1{{\fam\txbfam\relax#1}}
-\def\widehat#1{\setbox\z@\hbox{$\m@th#1$}%
- \ifdim\wd\z@>\tw@ em\mathaccent"0\txbfam@5B{#1}%
- \else\mathaccent"0362{#1}\fi}
-\def\widetilde#1{\setbox\z@\hbox{$\m@th#1$}%
- \ifdim\wd\z@>\tw@ em\mathaccent"0\txbfam@5D{#1}%
- \else\mathaccent"0365{#1}\fi}
-%%--
-\font\teneufm=txmia at 10\PT % eufm10
-\font\seveneufm=txmia at 7\PT % eufm7
-\font\fiveeufm=txmia at 5\PT % eufm5
-\newfam\eufmfam
-\textfont\eufmfam=\teneufm
-\scriptfont\eufmfam=\seveneufm
-\scriptscriptfont\eufmfam=\fiveeufm
-\def\frak#1{{\fam\eufmfam\relax#1}}
-\let\goth\frak
-
-% Restore the catcode value for @ that was previously saved.
-\csname amsqtx.def\endcsname
-
-\endinput