<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">%%
%% This is file `amsfonts.sty',
%% generated with the docstrip utility.
%%
%% The original source files were:
%%
%% amsfonts.dtx 
%% 
%%% ====================================================================
%%% @LaTeX-file{
%%%   filename        = "amsfonts.dtx",
%%%   version         = "2.2f",
%%%   date            = "2001/10/25",
%%%   time            = "11:51:34 EDT",
%%%   checksum        = "12894 459 2125 19071",
%%%   author          = "American Mathematical Society",
%%%   copyright       = "Copyright 2001 American Mathematical Society,
%%%                      all rights reserved.  Copying of this file is
%%%                      authorized only if either:
%%%                      (1) you make absolutely no changes to your copy,
%%%                      including name; OR
%%%                      (2) if you do make changes, you first rename it
%%%                      to some other name.",
%%%   address         = "American Mathematical Society,
%%%                      Technical Support,
%%%                      Publications Technical Group,
%%%                      P. O. Box 6248,
%%%                      Providence, RI 02940,
%%%                      USA",
%%%   telephone       = "401-455-4080 or (in the USA and Canada)
%%%                      800-321-4AMS (321-4267)",
%%%   FAX             = "401-331-3842",
%%%   email           = "tech-support@ams.org (Internet)",
%%%   codetable       = "ISO/ASCII",
%%%   keywords        = "latex, amslatex, ams-latex, amsfonts, msam,
%%%                      msbm, eufm, blackboard bold",
%%%   supported       = "yes",
%%%   abstract        = "This file is part of the AMSFonts distribution.
%%%                      It provides easy access in \LaTeXe{} to certain
%%%                      math fonts for extra math symbols, fraktur
%%%                      letters, and blackboard bold letters. See the
%%%                      AMSFonts user's guide for more information.",
%%%   docstring       = "The checksum field above contains a CRC-16
%%%                      checksum as the first value, followed by the
%%%                      equivalent of the standard UNIX wc (word
%%%                      count) utility output of lines, words, and
%%%                      characters.  This is produced by Robert
%%%                      Solovay's checksum utility.",
%%% }
%%% ====================================================================
\NeedsTeXFormat{LaTeX2e}% LaTeX 2.09 can't be used (nor non-LaTeX)
[1994/12/01]% LaTeX date must be December 1994 or later
\ProvidesPackage{amsfonts}[2001/10/25 v2.2f]
\DeclareOption{psamsfonts}{%
  \ifnum\cmex@opt=7 \def\cmex@opt{10}%
  \else \def\cmex@opt{0}\fi
  \DeclareFontFamily{U}{msa}{}%
  \DeclareFontShape{U}{msa}{m}{n}{&lt;-6&gt;msam5&lt;6-8&gt;msam7&lt;8-&gt;msam10}{}%
  \DeclareFontFamily{U}{msb}{}%
  \DeclareFontShape{U}{msb}{m}{n}{&lt;-6&gt;msbm5&lt;6-8&gt;msbm7&lt;8-&gt;msbm10}{}%
  \DeclareFontFamily{U}{euf}{}%
  \DeclareFontShape{U}{euf}{m}{n}{&lt;-6&gt;eufm5&lt;6-8&gt;eufm7&lt;8-&gt;eufm10}{}%
  \DeclareFontShape{U}{euf}{b}{n}{&lt;-6&gt;eufb5&lt;6-8&gt;eufb7&lt;8-&gt;eufb10}{}%
}
\@ifundefined{cmex@opt}{\def\cmex@opt{1}}{}
\ProcessOptions\relax
\ifnum\cmex@opt=1 \relax
  \DeclareFontShape{OMX}{cmex}{m}{n}{&lt;-8&gt;cmex7&lt;8&gt;cmex8&lt;9&gt;cmex9%
    &lt;10&gt;&lt;10.95&gt;&lt;12&gt;&lt;14.4&gt;&lt;17.28&gt;&lt;20.74&gt;&lt;24.88&gt;cmex10}{}%
  \expandafter\let\csname OMX/cmex/m/n/10\endcsname\relax
\else
  \ifnum\cmex@opt=10 % need to override cmex7 fontdef from amsmath
    \begingroup
    \expandafter\let\csname OMX+cmex\endcsname\relax
    \fontencoding{OMX}\fontfamily{cmex}%
    \try@load@fontshape
    \endgroup
    \expandafter\let\csname OMX/cmex/m/n/10\endcsname\relax
    \def\cmex@opt{0}%
  \fi
\fi
\providecommand*{\@mathmeasure}[3]{%
  \setbox#1\hbox{\frozen@everymath\@emptytoks\m@th$#2#3$}}
\@ifundefined{@emptytoks}{\csname newtoks\endcsname\@emptytoks}{}
\DeclareSymbolFont{AMSa}{U}{msa}{m}{n}
\DeclareSymbolFont{AMSb}{U}{msb}{m}{n}
\@ifundefined{yen}{%
  \edef\yen{\noexpand\mathhexbox{\hexnumber@\symAMSa}55}
}{}
\@ifundefined{checkmark}{%
  \edef\checkmark{\noexpand\mathhexbox{\hexnumber@\symAMSa}58}
}{}
\@ifundefined{circledR}{%
  \edef\circledR{\noexpand\mathhexbox{\hexnumber@\symAMSa}72}
}{}
\@ifundefined{maltese}{%
  \edef\maltese{\noexpand\mathhexbox{\hexnumber@\symAMSa}7A}
}{}
\begingroup \catcode`\"=12
\DeclareMathDelimiter{\ulcorner}{\mathopen} {AMSa}{"70}{AMSa}{"70}
\DeclareMathDelimiter{\urcorner}{\mathclose}{AMSa}{"71}{AMSa}{"71}
\DeclareMathDelimiter{\llcorner}{\mathopen} {AMSa}{"78}{AMSa}{"78}
\DeclareMathDelimiter{\lrcorner}{\mathclose}{AMSa}{"79}{AMSa}{"79}
\xdef\widehat#1{\noexpand\@mathmeasure\z@\textstyle{#1}%
  \noexpand\ifdim\noexpand\wd\z@&gt;\tw@ em%
  \mathaccent"0\hexnumber@\symAMSb 5B{#1}%
  \noexpand\else\mathaccent"0362{#1}\noexpand\fi}
\xdef\widetilde#1{\noexpand\@mathmeasure\z@\textstyle{#1}%
  \noexpand\ifdim\noexpand\wd\z@&gt;\tw@ em%
  \mathaccent"0\hexnumber@\symAMSb 5D{#1}%
  \noexpand\else\mathaccent"0365{#1}\noexpand\fi}
\DeclareMathSymbol{\dabar@}{\mathord}{AMSa}{"39}
\xdef\dashrightarrow{\mathrel{\dabar@\dabar@
                              \mathchar"0\hexnumber@\symAMSa 4B}}%
\xdef\dashleftarrow{\mathrel{\mathchar"0\hexnumber@\symAMSa 4C\dabar@
                              \dabar@}}%
\global\let\dasharrow\dashrightarrow
\global\let\rightleftharpoons\undefined
\DeclareMathSymbol{\rightleftharpoons}{\mathrel}{AMSa}{"0A}
\global\let\angle\undefined
\DeclareMathSymbol{\angle}            {\mathord}{AMSa}{"5C}
\global\let\hbar\undefined
\DeclareMathSymbol{\hbar}             {\mathord}{AMSb}{"7E}
\global\let\sqsubset\undefined
\DeclareMathSymbol{\sqsubset}         {\mathrel}{AMSa}{"40}
\global\let\sqsupset\undefined
\DeclareMathSymbol{\sqsupset}         {\mathrel}{AMSa}{"41}
\global\let\mho\undefined
\DeclareMathSymbol{\mho}              {\mathord}{AMSb}{"66}
\endgroup
\DeclareMathAlphabet{\mathfrak}{U}{euf}{m}{n}
\SetMathAlphabet{\mathfrak}{bold}{U}{euf}{b}{n}
\DeclareSymbolFontAlphabet{\mathbb}{AMSb}
\DeclareFontEncodingDefaults{\relax}{\def\accentclass@{7}}
\DeclareRobustCommand{\frak}[1]{%
  {\@subst@obsolete{amsfonts}\frak\mathfrak{#1}}}
\DeclareRobustCommand{\Bbb}[1]{%
  {\@subst@obsolete{amsfonts}\Bbb\mathbb{#1}}}
\DeclareRobustCommand{\bold}[1]{%
  {\@subst@obsolete{amsfonts}\bold\mathbf{#1}}}
\begingroup \catcode`\"=12 \relax
\gdef\newsymbol#1#2#3#4#5{%
  \@obsolete{amsfonts}\newsymbol\DeclareMathSymbol
  \@ifdefinable#1{%
     \edef\next@
       {\ifcase #2 \or
          \hexnumber@\symAMSa\or
          \hexnumber@\symAMSb\fi}%
     \ifx\next@\@empty
       \PackageError{amsfonts}{\Invalid@@\newsymbol}\@ehd%
     \else
      \global\mathchardef#1"#3\next@#4#5
     \fi}}
\endgroup
\long\def\@gobblethree#1#2#3{}
\if@compatibility
  \let\@obsolete\@gobblethree
\else
  \def\@obsolete#1#2#3{\PackageWarning{#1}{%
    Obsolete command \protect#2; \protect#3 should be used instead}}%
\fi
\def\@subst@obsolete#1#2#3{\@obsolete{#1}#2#3\gdef#2{#3}#2}
\begingroup \catcode`\"=12
\DeclareMathSymbol{\square}           {\mathord}{AMSa}{"03}
\DeclareMathSymbol{\lozenge}          {\mathord}{AMSa}{"06}
\DeclareMathSymbol{\vartriangleright} {\mathrel}{AMSa}{"42}
\DeclareMathSymbol{\vartriangleleft}  {\mathrel}{AMSa}{"43}
\DeclareMathSymbol{\trianglerighteq}  {\mathrel}{AMSa}{"44}
\DeclareMathSymbol{\trianglelefteq}   {\mathrel}{AMSa}{"45}
\DeclareMathSymbol{\rightsquigarrow}  {\mathrel}{AMSa}{"20}
\@ifpackageloaded{latexsym}{\@tempswafalse}{\@tempswatrue}
\if@tempswa
  \global\let\Box\square
  \global\let\Diamond\lozenge
  \global\let\leadsto\rightsquigarrow
  \global\let\lhd\@@undefined
  \global\let\unlhd\@@undefined
  \global\let\rhd\@@undefined
  \global\let\unrhd\@@undefined
  \DeclareMathSymbol{\lhd}     {\mathbin}{AMSa}{"43}
  \DeclareMathSymbol{\unlhd}   {\mathbin}{AMSa}{"45}
  \DeclareMathSymbol{\rhd}     {\mathbin}{AMSa}{"42}
  \DeclareMathSymbol{\unrhd}   {\mathbin}{AMSa}{"44}
\xdef\Join{\mathrel{\mathchar"0\hexnumber@\symAMSb 6F\mkern-13.8mu%
  \mathchar"0\hexnumber@\symAMSb 6E}}
\fi
\endgroup
\endinput
%%
%% End of file `amsfonts.sty'.</pre></body></html>