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%%
%% This is file `ahandinstr-r.sty'
%% 
%% Copyright 2017 American Mathematical Society.
%% 
%% This file is part of the collection comprising the AMS Author Handbooks.
%% For details and license information, see the file README-AH.txt.
%%
%% The Current Maintainer of this work is the American Mathematical
%% Society.
%% 
%% ========================================================================
%% 

\NeedsTeXFormat{LaTeX2e}[1999/12/01]
\ProvidesPackage{ahandinstr-r}
    [2017/09/05 v1.0 AMS Author Handbook and instructions]

\RequirePackage{graphicx}
\RequirePackage{ifthen}
\RequirePackage{amssymb}
\RequirePackage{hologo}
\RequirePackage{etoolbox}
\RequirePackage{needspace}
\RequirePackage{varioref}
\RequirePackage[breaklinks,colorlinks]{hyperref}
\RequirePackage{url}
\RequirePackage{fancyvrb}

%% The default for amsbook is [openright], but the contents pages are
%% intentionally set on a page span.  To permit this exception, while
%% providing the ability to set the remainder of the document either
%% with (for printing) or without (for on-line reading) blank pages,
%% it is necessary to know which option was applied initially.

\newif\if@openany
\if@openright \@openanyfalse
\else \@openanytrue
\fi

\newboolean{monograph}
\newboolean{proceedings}
\newboolean{journal}
%\newboolean{ecollproc}
\newboolean{memoirs}

\newcommand{\AMS}{American Mathematical Society}
\newcommand{\JAMS}{\textit{Journal of the \AMS}}
\newcommand{\JoT}{\textit{The Joy of \TeX}}
\newcommand{\Memo}{\textit{Memoir}}
\newcommand{\Memos}{\textit{Memoirs}}
\newcommand{\MEMOS}{\textit{MEMOIRS}}
\newcommand{\MSN}{MathSciNet}

\renewcommand{\bibliofont}{\normalsize}

\def\latex/{\hologo{LaTeX}}
\def\latexe/{\hologo{LaTeXe}}
%\def\amslatex/{\hologo{AmSLaTeX}}
\def\amslatex/{AMS-\hologo{LaTeX}}
\def\tex/{\hologo{TeX}}
\def\amstex/{\ \vrule width 3em height1.25ex depth0pt\ }
\def\bibtex/{Bib{\TeX}}
%\let\BibTeX=\bibtex
\def\XeLaTeX/{\hologo{XeLaTeX}}
\def\LuaLaTeX/{\hologo{LuaLaTeX}}
\def\pdfLaTeX/{\hologo{pdfLaTeX}}
\def\TikZ{Ti\textit{k}Z}

\setcounter{tocdepth}{2}

\renewcommand{\bibliofont}{\normalsize}

\newcommand\ttcs[1]{\leavevmode\mbox{\def\\{\char`\\}%
    \tt\\\ignorespaces#1\unskip}}
\newcommand{\filnam}[1]{\mbox{\texttt{\ignorespaces#1\unskip}}}
\newcommand\cn[1]{\mbox{\def\\{\char`\\}%
    \normalfont\ttfamily\\\ignorespaces#1\unskip}}
\let\ttcs=\cn
\newcommand\ttcsb[2]{%
  \mbox{\def\\{\char`\\}%
    \normalfont\ttfamily
    \\begin\{\ignorespaces#1\unskip\}\ignorespaces#2\unskip}}
\newcommand\ttcse[1]{\mbox{\def\\{\char`\\}%
    \normalfont\ttfamily\\end\{\ignorespaces#1\unskip\}}}
\def\{{\char`\{\relax}
\def\}{\char`\}\relax}
\let\fn=\filnam
\let\cls=\filnam
\let\env=\filnam
\def\pkg#1{\texttt{\upshape#1}}
\def\opt#1{\filnam{[#1]}}

\newdimen\exindent
\exindent=\parindent
%% Add a high penalty to discourage line breaks within an example
%% without absolutely prohibiting them.
{\obeylines
 \gdef^^M{\par\penalty9999}%
 \gdef\beginexample#1{\medskip\bgroup %
   \def\(##1){\hbox to 0pt{\hss\rm##1\hss}}%
   \def~{\char`\~}\def\\{\char`\\}%
   \tt\frenchspacing %
   \parindent=0pt#1\leftskip=\exindent\obeylines}
}%  end \obeylines
\def\endexample{\endgraf\egroup\medskip}
\newdimen\exboxwidth
\exboxwidth=3in

\def\exbox#1#2{\noindent \hangindent=\exboxwidth
  \leavevmode\llap{\null\rm#1\unskip\enspace}%
  \hbox to\exboxwidth{\tt\ignorespaces#2\hss}\rm\ignorespaces}
  
%%  Provide a meta-command facility; provide an alternate escape
%%  character so it can be used within the verbatim environment.
%%  The definition from the old handbook works, but is unattractive.
%%  However, with the active > the cleaner version below can't be
%%  used both in and outside of verbatim, so leave the "clean" version
%%  for use "in the clear", so it doesn't have to be explained.
%%  Input is encoded as ... |?meta string> ...
\catcode`\|=0
\begingroup \catcode`\>=13 % in LaTeX2e verbatim env makes > active
\gdef\?#1>{{\normalfont$\langle$\textit{#1}$\rangle$}}
\gdef\0{\relax}
\endgroup

%\def\<#1>{{\rm$\langle$#1$\rangle$}}
\def\<#1>{{\normalfont$\langle$\textit{#1}$\rangle$}}

%%  Regarding a meta command in verbatim, a request has been made
%%  for addition of a fancyvrb mechanism using [commandchars=...]
%%  that doesn't run into the active > problem.


\newcommand{\secwnote}[3][]{%
	\section{#2}%
	\if###1##%
	\else
		\label{#1}%
	\fi
	\noindent
	\bgroup
	\itshape#3%
	\par
	\egroup
}

\newcommand{\jmp}[3]{%
	\ifjournal #1\fi
	\ifmonograph #2\fi
	\ifproceedings #3\fi
}

\newcommand{\jmpm}[4]{%
	\ifjournal #1\fi
	\ifmonograph #2\fi
	\ifproceedings #3\fi
	\ifmemoirs #4\fi
}

\newcommand{\monomemo}[1]{%
	\ifmonograph #1\fi
	\ifmemoirs #1\fi
}

\newcommand{\monoormemo}[2]{%
	\ifmonograph #1\fi
	\ifmemoirs #2\fi
}

\newcommand{\bookseries}[1]{%
	\ifmonograph #1\fi
	\ifproceedings #1\fi
}

\newcommand{\notarticle}[1]{%
	\ifmonograph #1\fi
%	\ifproceedings #1\fi
	\ifmemoirs #1\fi
	\ifjournal
	\else #1\fi
}

\newcommand{\notmonograph}[1]{%
%	\ifjournal #1\fi
%	\ifproceedings #1\fi
%	\ifmemoirs #1\fi
	\ifmonograph
	\else #1\fi
}

%  Abolish indents following section headings.

\patchcmd{\@startsection}{\@afterindenttrue}{\@afterindentfalse}{}{}
\def\subsection{\@startsection{subsection}{2}%
  \z@{.5\linespacing\@plus.7\linespacing}{-.5em}%
  {\normalfont\bfseries}}


%%  "Repair" the item indentations; they are wider than desirable
%%  in the AMS document classes (on the list for the "overhaul").

\AtBeginDocument{%
  \labelsep=5pt\relax
  \setcounter{enumi}{13}\setcounter{enumii}{13}%
  \setcounter{enumiii}{13}\setcounter{enumiv}{13}%
  \settowidth\leftmargini{\labelenumi\hskip\labelsep}%
%  \advance\leftmargini by \normalparindent
  \settowidth\leftmarginii{\labelenumii\hskip\labelsep}%
  \settowidth\leftmarginiii{\labelenumiii\hskip\labelsep}%
  \settowidth\leftmarginiv{\labelenumiv\hskip\labelsep}%
  \setcounter{enumi}{0}\setcounter{enumii}{0}%
  \setcounter{enumiii}{0}\setcounter{enumiv}{0}%
  \leftmarginv=10pt  \leftmarginvi=\leftmarginv
  \leftmargin=\leftmargini
  \labelwidth=\leftmargini \advance\labelwidth-\labelsep
  \@listi}

%%  Repair indentations of toc levels below section.
%%  When amsbook is updated to include \ams@measure, use that instead
%%  of \check@string, and remove \check@string and related definitions.

\newif\if@string@empty
\@string@emptyfalse
\newcommand{\check@string@length}[1]{%
  \setbox\@tempboxa\hbox{\ignorespaces#1\unskip}%
  \ifdim\wd\@tempboxa=\z@
    \@string@emptytrue
  \else
    \@string@emptyfalse
  \fi
}
\renewcommand{\tocsection}[3]{%
    \check@string@length{#2}%
    \indentlabel{%
        \if@string@empty\else
            \ignorespaces#1 #2%
            \check@string@length{#3}%
            \if@string@empty\else
                .\quad
            \fi
        \fi
    }%
    #3%
}
\def\l@subsection{\@tocline{2}{0pt}{2pc}{2.5pc}{}}
\let\tocsubsection\tocsection

%%  Allow more space for page numbers (not needed for numbers, but
%%  makes multiline toc entries break better)

\renewcommand{\@pnumwidth}{2.5em}  % was 1.6em

%  Provide token strings for elements that are common to more than
%  one type of publication, but not to all; the actual text is
%  defined in the file Author_Handbook_Body just before the section
%  in which it will be used.

\newtoks\FirstPageFootnotes  % used for journal and proceedings
\newtoks\ArticleTitleDesc    % used for journal and proceedings
\newtoks\ArticleTitleUC      % used for journal and proceedings
\newtoks\RunHeadJP           % used for journal and proceedings
\newtoks\BiblioInFile        % used for journal and proceedings
\newtoks\AcadAffil           % used for journal and proceedings
\newtoks\UseDriverFile       % used for Memoirs and monographs
\newtoks\ChapterRight        % used for Memoirs and monographs
\newtoks\ChapterTitleUC      % used for Memoirs and monographs
\newtoks\RunHeadMM	     % used for Memoirs and monographs
\newtoks\BiblioBooks	     % used for Memoirs and monographs
\newtoks\AddHyperref         % used for all but monographs
\newtoks\GrantsThanks        % used for all but monographs
\newtoks\ConsentToPublish    % used for all but monographs

%%  \bibintro is defined in the in-house version of amsbook, but not
%%  the current public version.  When the public version gets updated,
%%  this definition should be removed.

\let\bibintro\@empty
\renewcommand{\bibliofont}{\small}
\renewenvironment{thebibliography}[1]{%
  \@bibtitlestyle
  \normalfont\bibliofont \labelsep.5em\relax
  \ifx\@empty\bibintro
  \else
    \begingroup
      \settowidth{\leftmargini}{\kern\captionindent}
      \bibintro\par
    \endgroup
    \vspace{12\p@}
  \fi
  \renewcommand\theenumiv{\arabic{enumiv}}\let\p@enumiv\@empty
  \list{\@biblabel{\theenumiv}}{\settowidth\labelwidth{\@biblabel{#1}}%
    \leftmargin\labelwidth \advance\leftmargin\labelsep
    \usecounter{enumiv}}%
  \itemsep3\p@ plus\p@ minus\p@
  \sloppy \clubpenalty\@M \widowpenalty\clubpenalty
  \sfcode`\.=\@m
}{%
  \def\@noitemerr{\@latex@warning{Empty `thebibliography' environment}}%
  \endlist
}

\endinput