bookjhcmr.sty

\ProvidesPackage{bookjh}[2001/05/24 Material for _Linear Algebra_ (JH)]
%% bookjh.sty 
% The INITIAL CODE part

% The DECLARATION OF OPTIONS part
%\DeclareOption{singleanswerfile}{}


% The EXECUTION OF OPTIONS part
%\ProcessOptions

% The PACKAGE LOADING part

% The dvidrv package allows me to specify on the command line what is
% my driver.
% \usepackage[yes]{hrefout}
% \newcommand{\dvidrv}{pdftex}
% \typeout{DVI DRIVER IN BOOKJH IS \dvidrv}

% Set page margins, etc.
\usepackage[paper=letterpaper,
            textwidth=345pt,textheight=598pt,  % LaTeX defaults
            % top=1in,bottom=1in % squeeze a lot on the paper
            ]{geometry}

% \usepackage[\dvidrv]{xcolor}
\usepackage{xcolor}
  % These are from http://kuler.adobe.com/#themeID/1538583
  % clear by reisjart (lightened one color)
  % \definecolor{basecolor}{rgb}{0.1686, 0.5032, 0.4118}  % 43,78,105
  % \definecolor{darkcolor}{rgb}{0.0824, 0.1412, 0.2157}  % 21,39,55
  % \definecolor{bgcolor}{rgb}{0.6627, 0.8196, 0.8784}  % 165,209,224
  % \definecolor{flourishcolor}{rgb}{0.4078, 0.1373, 0.1294}  % 104,35,33 
  % These are from http://kuler.adobe.com/#themeID/19069
  % read and smooth by info
  % \definecolor{bgcolor}{rgb}{0.905882353, 0.91372549, 0.819607843}  % 231,233,209
  % \definecolor{rulecolor}{rgb}{0.82745098, 0.831372549, 0.666666667}  % 211,212,170
  % \definecolor{papercolor}{rgb}{0.988235294, 0.980392157, 0.901960784}  % 252,250,230
  % \definecolor{darkcolor}{rgb}{0.266666667, 0.266666667, 0.266666667}  % 68,68,68
  % \definecolor{flourishcolor}{rgb}{0.564705882, 0.094117647, 0.031372549}  % 144,24,8
  % These are from http://kuler.adobe.com/#themeID/1440313
  % Cote Azur by Philip.Schweikert (lightened one color)
  % \definecolor{darkcolor}{rgb}{0, 0.34510, 0.37255}  % 0,88,95
  % \definecolor{boldcolor}{rgb}{0, 0.57647, 0.57647}  % 0,147,147
  % \definecolor{neutralcolor}{rgb}{1.00000, 0.98824, 0.76863}  % 255,252,196
  % \definecolor{bgcolor}{rgb}{0.94118, 0.92941, 0.73333}  % 240,237,187 
  % \definecolor{flourishcolor}{rgb}{1.00000, 0.21961, 0}  % 255,56,0
  % These are from http://www.colorcombos.com/color-scheme-20.html
  % \definecolor{darkcolor}{HTML}{217C7E}  % 
  % \definecolor{boldcolor}{HTML}{3399FF}  % 
  % \definecolor{bgcolor}{HTML}{F3EFE0}  %  
  % \definecolor{flourishcolor}{HTML}{9A3334}  %
  % From http://colorschemedesigner.com/#3M32r--..k.Yu
  \definecolor{darkcolor}{HTML}{193E9A}  % 
  \definecolor{boldcolor}{HTML}{0034B7}  % 
  \definecolor{lightcolor}{HTML}{DAE4FC} % {799FFC}  % 
  \definecolor{bgcolor}{HTML}{FCFFDC}  %  
  \definecolor{flourishcolor}{HTML}{F80018}  %

% \usepackage[\dvidrv]{graphicx}  %
\usepackage{graphicx}  %
\usepackage{url}
% \usepackage{color}
% \usepackage{graphicx}  %
%\graphicspath{{./}{./graphics/}} %
\usepackage{ifpdf}
%  \@ifundefined{pdfoutput}{}{%
%  \typeout{ ABOUT TO RUN GRAPHICS RULE }
%  \DeclareGraphicsRule{*}{mps}{*}{} % make pdflatex take fig.1 as metapost.
%  }%
%\ifpdf
  % \typeout{ ABOUT TO RUN GRAPHICS RULE }
  % \DeclareGraphicsRule{*}{mps}{*}{} % make pdflatex take fig.1 as metapost.
%\fi
\DeclareGraphicsRule{*}{mps}{*}{} % make pdflatex take fig.1 as metapost.
\usepackage{linalgjh}
\usepackage{makeidx}

\usepackage{pbsi} % This font is in TeXLive so I consider it accessible at this point
\newcommand{\fancyfont}[1]{\textbsi{#1}}
% Next two are for the cover
% \usepackage{emerald}
% \usepackage{tgchorus}
\usepackage[outline]{contour}
\usepackage{rotating}

% The MAIN CODE part


%================= me 
\newcommand{\myname}{Jim Hef{}feron}             % The empty box prevents
                                                 % using a ligature for the ff 


%=========== formatting ===================================
% HEADERS and FOOTERS
\RequirePackage{fancyhdr}
% See http://en.wikibooks.org/wiki/LaTeX/Page_Layout
\setlength{\headheight}{15.2pt}

%HEADINGS
% \lhead[lh-even]{lh-odd} \chead[ch-even]{ch-odd} \rhead[rh-even]{rh-odd}
% \lfoot[lf-even]{lf-odd} \cfoot[cf-even]{cf-odd} \rfoot[rf-even]{rf-odd}
% where
% When LaTeX wants to create a page with an empty style, it will insert the 
% first argument of fancyplain, in all the other cases it will use the 
% second argument
% and available are
% \thepage  number of the current page
% \leftmark current chapter name printed like "CHAPTER 3. THIS IS THE CHAPTER TITLE"
% \rightmark current section name printed like "1.6. THIS IS THE SECTION TITLE"
% \chaptername the name chapter in the current language. If this is English, it will display "Chapter"
% \thechapter 	current chapter number
% \thesection 	current section number

% Main body of book
\fancypagestyle{bookbody}{%
  \renewcommand{\headrulewidth}{.4pt}
  \renewcommand{\footrulewidth}{0pt}
  \lhead[\fancyplain{\renewcommand{\headrulewidth}{0pt}}{\thepage}]{\fancyplain{\renewcommand{\headrulewidth}{0pt}}{\textsl{\rightmark}}}
  \rhead[\fancyplain{}{\textsl{\leftmark}}]{\fancyplain{}{\thepage}}
  \chead{}
  \lfoot{}
  \rfoot{}
  \cfoot{\fancyplain{\renewcommand{\footrulewidth}{.4pt}\thepage}{}}
}

% Topic sections
\fancypagestyle{booktopic}{%
  \renewcommand{\headrulewidth}{.4pt}
  \renewcommand{\footrulewidth}{0pt}
  \lhead[\fancyplain{\renewcommand{\headrulewidth}{0pt}}{\thepage}]{\fancyplain{\renewcommand{\headrulewidth}{0pt}}{\textsl{\rightmark}}}
  \rhead[\fancyplain{}{\textsl{\leftmark}}]{\fancyplain{}{\thepage}}
  \chead{}
  \lfoot{\fancyplain{\thepage}{}}
  \rfoot{\fancyplain{\thepage}{}}
  \cfoot{\fancyplain{\thepage}{}}
}

% Front matter
\fancypagestyle{bookfront}{%
  \lhead{}
  \rhead{}
  \chead{}
  \renewcommand{\headrulewidth}{0pt}
  \renewcommand{\footrulewidth}{0pt}
  \lfoot{}
  \rfoot{}
  \cfoot{\fancyplain{}{-- \thepage{} --}}
}

% Chapters start with an empty page (includes first page of toc)
\fancypagestyle{bookemptypage}{%
  \lhead{}
  \rhead{}
  \chead{}
  \renewcommand{\headrulewidth}{0pt}
  \renewcommand{\footrulewidth}{0pt}
  \lfoot{}
  \rfoot{}
  \cfoot{}
}

% Table of contents
\fancypagestyle{booktoc}{%
  \lhead{}
  \rhead{}
  \chead{}
  \renewcommand{\headrulewidth}{0pt}
  \renewcommand{\footrulewidth}{0pt}
  \lfoot{}
  \rfoot{}
  \cfoot{}
}

\pagestyle{bookfront}
\pagenumbering{roman}



%=============== shaded and non-shaded theorems =============
% The shadethm package allows, say, \begin{theorem} .. \end{theorem} 
% material to always come out shaded. 
% \RequirePackage{shadethm}

% \RequirePackage{amsthm}
% \swapnumbers
% \renewcommand{\thmnote}[1]{{\bfseries #1}}
% \newtheoremstyle{text}% name of the style to be used
%   {\thm@preskip}% measure of space to leave above the theorem. E.g.: 3pt
%   {\thm@postskip}% measure of space to leave below the theorem. E.g.: 3pt
%   {\normalfont}% name of font to use in the body of the theorem
%   {0pt}% measure of space to indent
%   {\bfseries}% name of head font
%   {}% punctuation between head and body
%   { }% space after theorem head; leave blank space (not empty) for normal interword space
%   {\arabic{subsection}.\arabic{theorem}\ \thmname{#1}\thmnote{ (#3)}\ } % Manually specify head
% \theoremstyle{text} % the theorem environments below will use the `text' style
% % shaded theorems
% \newtheorem{theorem}{Theorem}[subsection]
%   % \surroundwithmdframed[style=thmstyle]{theorem}\resetparens[theorem]
% \newtheorem{proposition}[theorem]{Proposition}
%   \surroundwithmdframed[style=thmstyle]{proposition}
% \newtheorem{axiom}[theorem]{Axiom}
%   \surroundwithmdframed[style=thmstyle]{axiom}
% \newtheorem{axioms}[theorem]{Axioms}
%   \surroundwithmdframed[style=thmstyle]{axioms}
% \newtheorem{definition}[theorem]{Definition}
%   \surroundwithmdframed[style=thmstyle]{definition}\resetparens[definition]
% \newtheorem{notation}[theorem]{Notation}
%   \surroundwithmdframed[style=thmstyle]{notation}\resetparens[notation]
% % unshaded theorems
% \newtheorem{lemma}[theorem]{Lemma}
% \newtheorem{corollary}[theorem]{Corollary}
% \newtheorem{example}[theorem]{Example}
% \newtheorem{exercise}[theorem]{Exercise}
% \newtheorem{remark}[theorem]{Remark}
% \newtheorem{note}[theorem]{Note} %conflicts with seminar
% % I like the theorems to only list the subsection and the theorem number
% \renewcommand{\thetheorem}{\arabic{subsection}.\arabic{theorem}}

% \definecolor{shadecolor}{rgb}{0.9412,.9412,1.0000} % 
\colorlet{shadecolor}{bgcolor}
\definecolor{shaderulecolor}{rgb}{0.1529,0.2510,0.5451} % RoyalBlue
% \usepackage[framemethod=tikz]{mdframed}
% \newrobustcmd*\resetparens[1][definition]{\AtBeginEnvironment{#1}{\mdf@restoreparams}}   % md says this will be incorporated in next version of mdframed
% I don't see that leftmargin and rightmargin have any effect.
% \mdfdefinestyle{thmstyle}{nobreak=true,
%           leftmargin=-0.2em,innerleftmargin=0.2em,
%           rightmargin=-0.2em,innerrightmargin=0.2em,
%           % skipabove=.4ex,innertopmargin=-.6ex,
%           skipabove=.5\thm@preskip,innertopmargin=.5\thm@preskip,
%           % innerbottommargin=.6ex,skipbelow=.6ex,
%           % is better in principle, but doesn't work: 
%           innerbottommargin=.5\thm@postskip,skipbelow=.5\thm@postskip,
%           backgroundcolor=shadecolor,
%           linewidth=0.4pt,
%           linecolor=shaderulecolor}

\usepackage{framed}
\usepackage{amsthm} 
\usepackage{thmtools}
\declaretheoremstyle[
  % spaceabove=.5\thm@preskip, spacebelow=.5\thm@postskip,
  headfont=\normalfont\bfseries,
  notefont=\normalfont\bfseries, notebraces={ (}{)},
  headformat={\NUMBER\ \NAME\NOTE\ignorespaces}, % note that \thetheorem is redefined below so \NUMBER is altered
  headpunct={},
  bodyfont=\normalfont,
  postheadspace={.618em plus .2em minus .1em},
  preheadhook={\begin{snugshade}},
  postfoothook={\end{snugshade}}
%   % for doing this with mdframed, see also http://tex.stackexchange.com/questions/34405/shaded-theorems-thmtools-spanning-pages
  ]{shadedtext}  % for text that has a shaded box behind it TODO: make the frames not add any vertical space, add a rule to the frame
\declaretheoremstyle[
  % spaceabove=.5\thm@preskip, spacebelow=.5\thm@postskip,
  headfont=\normalfont\bfseries,
  notefont=\normalfont\bfseries, notebraces={ (}{)},
  headformat={\NUMBER\ \NAME\NOTE\ignorespaces}, % note that \thetheorem is redefined below so \NUMBER is altered
  headpunct={},
  bodyfont=\normalfont,
  postheadspace={.618em plus .2em minus .1em},
  ]{text}   % for text that is not shaded 
\declaretheoremstyle[
  % spaceabove=.5\thm@preskip, spacebelow=.5\thm@postskip,
  headfont=\normalfont\small\scshape,
  notefont=\normalfont\small\scshape, notebraces={ (}{)},
  headformat={\NAME\NOTE\ignorespaces}, % note that \thetheorem is redefined below so \NUMBER is altered
  headpunct={},
  bodyfont=\normalfont,
  postheadspace={.618em plus .2em minus .1em},
  prefoothook={\hfill\qedsymbol}
  ]{pf}  % for proofs, with qedsymbol at the end
\declaretheorem[name=Theorem,
                style=shadedtext,
                numberwithin=subsection,]{theorem}
   % \surroundwithmdframed[style=thmstyle]{theorem}\resetparens[theorem]
\renewcommand{\thetheorem}{\arabic{subsection}.\arabic{theorem}}
\declaretheorem[name=Definition,
                style=shadedtext,
                sibling=theorem]{definition} 
   % \surroundwithmdframed[style=thmstyle]{definition} \resetparens[definition]
\declaretheorem[name=Lemma,
                style=shadedtext,
                sibling=theorem]{lemma}
   % \surroundwithmdframed[style=thmstyle]{lemma}\resetparens[lemma]
\declaretheorem[name=Corollary,
                style=shadedtext,
                sibling=theorem]{corollary}
   % \surroundwithmdframed[style=thmstyle]{corollary}\resetparens[corollary]
\declaretheorem[name=Example,
                style=text,
                sibling=theorem]{example}
\declaretheorem[name=Exercise,
                style=text,
                sibling=theorem]{exercise}
\declaretheorem[name=Remark,
                style=text,
                sibling=theorem]{remark}
\let\proof\@undefined                        % undefine \proof
\let\endproof\@undefined                  % undefine \endproof
\declaretheorem[name=Proof,
                style=pf,
                numberwithin=subsection]{proof}


% styling of proofs
\renewcommand{\proofname}{{\scshape\small Proof}}
% End of \begin{proof} ... \end{proof}
\renewcommand{\qedsymbol}{{\scshape\small QED}}



%------------------------- code listings
\usepackage{listings}
\lstset{basicstyle=\ttfamily\scriptsize,
   commentstyle=\textit,
   keywordstyle=\color{blue}\bfseries,
   showstringspaces=false,
   xleftmargin=.7em,
   backgroundcolor=\color{bgcolor}
}
\lstdefinestyle{inline}{basicstyle=\ttfamily\small}




%================================================================
% FOOTNOTES
% Footnotes: Use footnote symbols (not numbers) on a per-page basis.
\renewcommand{\thefootnote}{\fnsymbol{footnote}}
\RequirePackage{footnpag}
% That package is only used for this purpose.
\newcommand{\appendrefs}[1]{\footnote{
                             More information on #1 is in the appendix.} }




% \newenvironment{inlinegraphic}{\begin{center}}{\end{center}} %
% \newcommand{\scannedpicture}[1]{%
% %\ifpdf
% %  \includegraphics{#1.pdf}
% %\else
%   \includegraphics{#1.jpg}
% %\fi 
% }

%=========================================
% Enumeration environments
% Changed to support new kind of enumeration environment jh 90-7-10
\def\labelenumi{(\arabic{enumi})}
\def\theenumi{\arabic{enumi}}
\def\labelenumii{\(\bullet\)}
\def\theenumii{\alph{enumii}}
\def\p@enumii{\theenumi}
\def\labelenumiii{(\roman{enumiii})}
\def\theenumiii{\roman{enumiii}}
\def\p@enumiii{\theenumi(\theenumii)}
\def\labelenumiv{\bf --}
\def\theenumiv{\Alph{enumiv}}
\def\p@enumiv{\p@enumiii\theenumiii}

\def\labelitemi{$\bullet$}
\def\labelitemii{\bf --}
\def\labelitemiii{$\ast$}
\def\labelitemiv{$\cdot$}



%================= TABLE OF CONTENTS =========================
% For table of contents
% See tocloft package documentation for info.  Anything more than below should
% probably bring in that package.
\setcounter{tocdepth}{2} \setcounter{secnumdepth}{2}

% \renewcommand{\@pnumwidth}{15.85pt} %trial and error; addtolength didn't work
\renewcommand{\@pnumwidth}{18pt} 
\renewcommand{\@tocrmarg}{4em}
\usepackage{tocloft}
\tocloftpagestyle{booktoc}
\cftpagenumbersoff{chapter}
\setlength{\cftchapnumwidth}{8em}
% \renewcommand*\l@chapter[2]{%
%   \ifnum \c@tocdepth >\m@ne
%     \addpenalty{-\@highpenalty}%
%     \vskip 1.0em \@plus\p@
%     \setlength\@tempdima{8.5em}% was 1.5em
%     \begingroup
%       \parindent \z@ \rightskip \@pnumwidth
%       \parfillskip -\@pnumwidth
%       \leavevmode \bfseries
%       \advance\leftskip\@tempdima
%       \hskip -\leftskip
%       #1\nobreak\hfil \nobreak\hb@xt@\@pnumwidth{\hss #2}\par
%       \penalty\@highpenalty
%     \endgroup
%   \fi}
%
\renewcommand*\l@section{\@dottedtocline{1}{2em}{1.65em}} %98XII08 was 1.5
\renewcommand*\l@subsection{\@dottedtocline{2}{3em}{2.5em}} % 98Xii05 was 1.5em
\renewcommand*\l@subsubsection{\@dottedtocline{3}{3em}{1.25em}} 
\renewcommand*\l@paragraph{\@dottedtocline{4}{10em}{5em}}
\renewcommand*\l@subparagraph{\@dottedtocline{5}{12em}{6em}}

%end PAGE LAYOUT


%===================================================
% CHAPTER
% 
% The \chapter command does not take an argument.  Instead, both \chapter
% and \chapter* use \secdef, with the line \secdef\@chapter\@schapter .  
% The first argument to \secdef tells LaTeX what to do with \chapter while 
% the second tells LaTeX what to do with \chapter* .  So \chapter{Introduction}
% will use \@chapter (which does have an argument and so grabs the chapter
% name), whereas \chapter*{Acknowledgements} will use \@schapter. 
%
% The \@chapter and \@schapter write to some external files and then 
% use \@makechapterhead and \@makeschapterhead to do the actual formatting.
% 
\renewcommand\chapter{\if@openright\cleardoublepage\else\clearpage\fi
   % Redefine the way exercises are handled, back from 
   % how Topics handle them 
   \renewcommand{\announcesectioninginanswerfile}{%
     \sectioninginanswerfilechapterstyle}
   \renewcommand{\ansparams}{{\Englishnumber{\value{chapter}}.\Roman{section}.\arabic{subsection}.\Currentlabel}}
  % renew definition of exercise formatting (perhaps undone in Topic)
  \renewcommand{\exercise@makelabel}{} % 
  % \ifhrefout
    \renewcommand{\exercise@deflabel}[1]{\hyperdef{exercise}{\Englishnumber{\value{chapter}}.\Roman{section}.\arabic{subsection}.\Currentlabel}{}\hyperref{./jhanswer.pdf}{ans}{\Englishnumber{\value{chapter}}.\Roman{section}.\arabic{subsection}.\Currentlabel}{\textbf{\arabic{subsection}.\Currentlabel}}}
  % \else
  %    \renewcommand{\exercise@deflabel}[1]{\textbf{\arabic{subsection}.\arabic{##1}}}
  % \fi
   \thispagestyle{bookemptypage}%
   \global\@topnum\z@
   \@afterindentfalse
   \secdef\@chapter\@schapter}

%\usepackage{ocm}

% Change what goes into the table of contents for chapters here.

% Copied from book.cls
\def\@chapter[#1]#2{\ifnum \c@secnumdepth >\m@ne
                       \if@mainmatter
                         \refstepcounter{chapter}%
                         \typeout{\@chapapp\space\thechapter.}%
                         \addcontentsline{toc}{chapter}%
                                   {\protect\numberline{Chapter \thechapter:}#1}
                         % Announce the chapter also in the answers to exercises
                         \Writetofile{\ans@fn}{\protect\chapter\protect{Chapter \Englishnumber{\value{chapter}}: #1\protect}}
                       \else
                         \addcontentsline{toc}{chapter}{#1}%
                       \fi
                    \else
                      \addcontentsline{toc}{chapter}{#1}%
                    \fi
                    \chaptermark{#1}%
                    \addtocontents{lof}{\protect\addvspace{10\p@}}%
                    \addtocontents{lot}{\protect\addvspace{10\p@}}%
                    \if@twocolumn
                      \@topnewpage[\@makechapterhead{#2}]%
                    \else
                      \@makechapterhead{#2}%
                      \@afterheading
                    \fi}

\def\@makechapterhead#1{\clearemptydoublepage
  % Grab the name of the chapter.  Has to go here, not in \chapter, since
  % that macro does not take an argument.
  \gdef\sectioningname{#1} 
  % Below here is where the chapter heading is formatted
  \vspace*{90\p@} % was 50\p@ 
  {\parindent \z@ \raggedright \normalfont
    \ifnum \c@secnumdepth >\m@ne
      \if@mainmatter
        % \huge\bfseries \@chapapp\space \thechapter
        {\setlength{\fboxsep}{0pt}\colorbox{flourishcolor}{\makebox[\textwidth]{\rule{0em}{0.6pt}}}} \\[-4.5ex]
        \selectfont\Large\textcolor{boldcolor}{\fancyfont{ \@chapapp{} \thechapter}}
        \par\nobreak
        \vskip 0\p@
      \fi
    \par
    \vskip 0\p@ \fi %was 20\p@
    \interlinepenalty\@M
    \Huge \bfseries\textcolor{black}{#1}\par\nobreak
    \vskip 50\p@  % was 30\p@
  }}



%--------exparts and exparts*
% For exercises with sub-parts.  The *-ed version prints them across:
% (a) xxx  (b) yyy  (c) zzz ..
% while the un-*-ed version prints them down:
% (a) xxx
% (b) yyy 
% Use this way:
% \begin{exparts}
%  \partitem        % not just \item so works in *-ed version.
% \end{exparts}
\newcounter{expartscount}
\newenvironment{exparts}{%
\def\partsitem{\item\relax}%
\begin{expartslist}%
}{%
\end{expartslist}}
%
\newenvironment{exparts*}{%
\def\partsitem{\penalty-400\hskip1.25em\relax\hbox{%
\refstepcounter{expartscount}\textbf{(\alph{expartscount})}\hspace*{.5em}}\nobreak}
\begin{expartslist}
\setlength{\itemindent}{-1.25em}
\rightskip=0pt plus7em\spaceskip=.3333em\xspaceskip=.5em\relax%
\item[]}{%
\end{expartslist}}
%
\newenvironment{expartslist}{%
\begin{list}{\textbf{(\alph{expartscount})}}{
  \usecounter{expartscount}
  \setlength{\leftmargin}{1em}
  \setlength{\rightmargin}{0em}
  \setlength{\listparindent}{\parindent}
  \setlength{\itemindent}{0em}
  \setlength{\labelsep}{.4em}
  \setlength{\labelwidth}{0em}
  \setlength{\topsep}{0ex}
  \setlength{\parskip}{0ex}
  \setlength{\partopsep}{0ex}
  \setlength{\parsep}{0ex}
  \setlength{\itemsep}{0ex}
  }%
}{%
\end{list}}
%
%...........end: exparts and exparts*


%...........
% environment: tfae
%  for lists of statements that are equivalent.
\newcounter{tfaecount}
\newenvironment{tfae}{%
\begin{list}{(\arabic{tfaecount})}{\usecounter{tfaecount}
  \setlength{\leftmargin}{\parindent}
  \setlength{\itemsep}{0ex}
  \setlength{\topsep}{.2ex}
  \setlength{\partopsep}{0ex}
  \setlength{\parskip}{0ex}
  \setlength{\parsep}{0ex}}}{%
\end{list}}
%
\newcounter{saveshadetheorem}
\renewcommand{\theoremstyle}{\textbf{\arabic{subsection}.\arabic{theorem}}}
 \newcounter{exerciselistcounter}

% ENVIRONMENT: computercode
\newcommand{\announcecomputercode}{\bigbreak\par\noindent%
                                   \textbf{Computer Code}\par\noindent}
\RequirePackage{verbatim}
\newenvironment{computercode}{
        \begingroup\small\verbatim
      }{\endverbatim\endgroup\pagebreak[2]%
      }

% ENVIRONMENT: indented
\newenvironment{indented}{%
    \begin{list}{\exercisecounterstyle
                }{%
                  \setlength{\leftmargin}{1.2\parindent}
                  \setlength{\rightmargin}{0em}
                  \setlength{\parsep}{\parskip}
                  \setlength{\itemsep}{.4ex plus .1ex minus .15ex}
                  \setlength{\itemindent}{0em} % \leftmargin}
                  \setlength{\listparindent}{\parindent}
                  \setlength{\topsep}{.5ex plus .1ex minus .1ex}
                  \setlength{\partopsep}{0ex plus .1ex}
                  \setlength{\labelsep}{0em}
                  \setlength{\labelwidth}{0em}
                  \setlength{\abovedisplayskip}{3pt plus2pt minus3pt}%
                  \setlength{\belowdisplayskip}{\abovedisplayskip}
                  \setlength{\abovedisplayshortskip}{\z@ plus2pt}%
                  \setlength{\belowdisplayshortskip}{3pt plus2pt minus3pt}
                 }
  \item[]}{\end{list}
   }



\usepackage{engnum}
%\renewcommand{\thechapter}{\Englishnumber{\value{chapter}}}
%\renewcommand{\thesection}{\thechapter.\Roman{section}}
\renewcommand{\thechapter}{\Englishnumber{\value{chapter}}}
\renewcommand{\thesection}{\Roman{section}}
\renewcommand{\thesubsection}{\arabic{subsection}}
\renewcommand{\chaptermark}[1]{% docs in fancyheadings.
  \markboth{\chaptername~\thechapter. #1}{}}
\renewcommand{\sectionmark}[1]{%
  \markright{Section~\Roman{section}. #1}}
%\renewcommand{\thesubsection}{\arabic{subsection}}
%end headings

% PAGE LAYOUT
% (from http://theoval.cmp.uea.ac.uk/~nlct/latex/thesis/node9.html)
% \@startsection{<type>}{<level>}{<indent>}{<beforeskip>}{<afterskip>}{<style>} 
% where 
% <type>
%     One of: section, subsection, subsubsection, paragraph or subparagraph. (Note no backslash.)
%
% <level>
%  part          -1
%  chapter        0
%  section        1
%  subsection     2
%  subsubsection  3
%  paragraph      4
%  subparagraph   5
% 
% <indent>
%     A length giving indentation from the left margin.
% 
% <beforeskip>
%     The absolute value is how much vertical distance to leave before the 
% heading. If <beforeskip> is negative the first paragraph following the 
% section heading will not be indented.
% 
% <afterskip>
%     The absolute value is how much vertical distance to leave after the 
% heading. If <afterskip> is negative, the text following the sectioning 
% command will appear on the same level as the section heading.
% 
% <style>
%     The declarations to set the style of the heading (e.g. \itshape for 
% an italic heading.) The last command in <style> may be a 
% command which takes a single argument but all the others must be declarations.
\renewcommand{\section}{\@startsection%
     {section}{1}{0em}{-14ex plus1ex minus2ex}{1em}%
     {\raggedright\Large\bfseries}}
\newcommand{\topicsection}{\@startsection%
     {section}{1}{0em}{-12ex plus1ex minus2ex}{3em}%
     {\raggedright\makebox[0em][l]{%
         \raisebox{6ex}{%
             \raisebox{-.25ex}{\makebox[0em][l]{\setlength{\fboxsep}{0pt}\colorbox{flourishcolor}{\makebox[\textwidth][r]{\rule{0em}{0.8pt}}}}}%
            \Large\bfseries\textcolor{boldcolor}{\fancyfont{Topic}}%
            }%
        }%
        \LARGE\bfseries}}
% \newcommand{\jh@subsection}{\@startsection%
%      {subsection}{2}{0em}{-10ex plus1ex minus1ex}{1em}%
%      {\raggedright\large\bfseries}}
% \renewcommand{\subsection}{\jh@subsection}
\renewcommand{\subsection}{\@startsection
   {subsection}{2}{0em}{-10ex plus1ex minus1ex}{1em}%
   {\raggedright\large\bfseries}}
\renewcommand{\thesubsection}{\thesection.\arabic{subsection}}
% \renewcommand{\subsection}[1]{\gdef\sectioningname{#1}\@startsection%
%    {subsection}{2}{0em}{10ex plus1ex minus1ex}{1em}%
%    {\raggedright\large\bfseries}}
% \renewcommand{\subsection}{%
% \refstepcounter{subsection}%
% \secdef\subseccmda\subseccmdb}

% \newcommand{\subseccmda}[2][default]{%
% \addcontentsline{toc}{subsection}{\protect\numberline{\thesubsection} #1}%
% \subsecheader{#2}}

% \newcommand{\subseccmdb}[1]{\subsecheader{#1}}
\def\@sect#1#2#3#4#5#6[#7]#8{%
  \ifnum #2>\c@secnumdepth
    \let\@svsec\@empty
  \else
    \refstepcounter{#1}%
    \protected@edef\@svsec{\@seccntformat{#1}\relax}%
  \fi
  \@tempskipa #5\relax
  \ifdim \@tempskipa>\z@
    \begingroup
      #6{%
        \@hangfrom{\hskip #3\relax\@svsec}%
          \interlinepenalty \@M #8\@@par}%
    \endgroup
    \csname #1mark\endcsname{#7}%
    % JH 2012-Mar-10 define sectioningname for answer file
    % \Writetofile{\ans@fn}{\expandafter\protect\csname #1\endcsname\protect{#8\protect}}
    \gdef\sectioningname{#8}
    \addcontentsline{toc}{#1}{%
      \ifnum #2>\c@secnumdepth \else
        \protect\numberline{\csname the#1\endcsname}%
      \fi
      #7}%
  \else
    \def\@svsechd{%
      #6{\hskip #3\relax
      \@svsec #8}%
      \csname #1mark\endcsname{#7}%
      \addcontentsline{toc}{#1}{%
        \ifnum #2>\c@secnumdepth \else
          \protect\numberline{\csname the#1\endcsname}%
        \fi
        #7}}%
  \fi
  \@xsect{#5}}

\usepackage{trimspaces}
% \newcommand{\subsecheader}[1]{\pagebreak[3]%
% \vspace{10ex plus1ex minus1ex}%
% \gdef\sectioningname{#1}% grab the subsec's name
% {\raggedright\large\bfseries\thesection.\thesubsection\ #1}%
% \nopagebreak\vspace*{1em}\par\noindent\trim@spaces}

% --------OPTIONAL SUBSECTION
%
% JH 2012-Jan-28 \newcommand{\subsectionoptional}[1]{\subsection[#1\protect$^*\protect$]{#1}}
\newcommand{\subsectionoptional}[1]{\subsection[#1\protect\raisebox{1pt}{*}]{#1}}
%
% for clearing out (needs twoside document option).
\newcommand{\clearemptydoublepage}{%
  \clearpage{\pagestyle{empty}\cleardoublepage}}

%==================== TOPICS ============================
% For applications sections.
% 
\newcommand{\topic}[1]{\clearpage\vspace*{.25in}\topicsection*{#1}
   \renewcommand{\announcesectioninginanswerfile}{%
      \sectioninginanswerfiletopicstyle}
  % renew definition of exercise formatting (perhaps undone in Chapter)
  \setcounter{theorem}{0}  % hack to make exercise numbering correct
  \renewcommand{\exercise@makelabel}{} % 
  \renewcommand{\exercise@deflabel}[1]{\textbf{\arabic{##1}}}
  \renewcommand{\ansparams}{{\Currentlabel}}
  \thispagestyle{empty}
  \gdef\sectioningname{#1}%
  \markright{Topic: #1}
  \addcontentsline{toc}{section}{Topic: #1}
  % \vspace*{15pt}\noindent\fancyfont{Topic}\par
  % \vspace*{10pt}\noindent{\Large\bfseries #1}\vspace{20pt}
  % \par\@afterindentfalse\nobreak 
}



%============ Spacing and dashes
% from ltugboat.cls 2000-Apr-27 for making dashes (It is Robin's).
% Really for 10 pt only.
\def\thinskip{\hskip 0.16667em\relax}
\def\endash{--}
\def\emdash{\endash-}
\def\d@sh#1#2{\unskip#1\thinskip#2\thinskip\ignorespaces}
\def\dash{\d@sh\nobreak\endash}
\def\Dash{\d@sh\nobreak\emdash}
\def\ldash{\d@sh\empty{\hbox{\endash}\nobreak}}
\def\rdash{\d@sh\nobreak\endash}
\def\Ldash{\d@sh\empty{\hbox{\emdash}\nobreak}}
\def\Rdash{\d@sh\nobreak\emdash}



%============ Cross References
%  The reference should know what type of object it is.  That is, 
% I should be able to say \ref[named]{#1} instead of what's below.
% But I can't find a style file that does that.  So this is a hack.
\newcommand{\nearbydefinition}[1]{Definition~\ref{#1}}
\newcommand{\nearbyfigure}[1]{Figure~\ref{#1}}
\newcommand{\nearbylemma}[1]{Lemma~\ref{#1}}
\newcommand{\nearbyexample}[1]{Example~\ref{#1}}
\newcommand{\nearbycounterexample}[1]{Counterexample~\ref{#1}}
\newcommand{\nearbytheorem}[1]{Theorem~\ref{#1}}
\newcommand{\nearbycorollary}[1]{Corollary~\ref{#1}}
\newcommand{\nearbyexercise}[1]{Exercise~\ref{#1}}
\newcommand{\nearbyremark}[1]{Remark~\ref{#1}}
\newcommand{\nearbynotice}[1]{Notice~\ref{#1}}
\newcommand{\nearbynote}[1]{Note~\ref{#1}}
% (`appendrefs' is elsewhere, in the footnote material.)

%============ Appendix

% the word under discussion
\newcommand{\startword}[1]{\medskip\par\noindent\textbf{#1}\hspace*{.5em plus .2em minus .05em}}

%=========== Cover
% space between graphics and determinants on the cover
\newcommand{\covgraphsep}{2.5ex}



% The hrefout package allows me to specify on the command line if I want
% to have hyperreffed output.
% \ifhrefout %
  \usepackage[
                colorlinks=true,
                linkcolor=darkcolor,citecolor=darkcolor,filecolor=darkcolor,urlcolor=darkcolor,
                naturalnames=false,  % if true, toc Three.IV.2 link no work 
                % hypertexnames=false, % 
                % hyperindex=false, % if true, pages are ten off
                plainpages=false,pdfpagelabels,  % HO says on ctt 2001-dec
                pdfpagemode=UseNone,pdfstartview=FitH,
                pdftitle={Linear Algebra},
                pdfauthor={Jim Hefferon, Saint Michael's College, Vermont USA,
                           http://joshua.smcvt.edu/linearalgebra},
                pdfsubject={linear algebra},
                pdfkeywords={linear algebra, mathematics, free, textbook}]{hyperref}
% \fi

% \usepackage[capitalise]{cleveref}  % nameinlink option not in my LaTeX yet?

% ==================== Cover
\newcommand{\covergraphic}{%
\par\noindent\makebox[0pt][c]{\contourlength{1.4pt}
  \rule{5.7in}{0em}
  \fontsize{260pt}{8pt}
  {\fontfamily{qzc}\itshape\selectfont \contour{darkcolor}{\textcolor{lightcolor}{Linear}}}
}  \\[-2.15in] 
\noindent\makebox[0pt][c]{\rule{8.5in}{0pt}%
  \makebox[0pt][l]{\contourlength{0.6pt} %
  \fontsize{65pt}{10pt}
  {\fontfamily{qzc}\itshape\selectfont \contour{flourishcolor}{\textcolor{white}{Algebra}}}
  }
}
}

\newcommand{\coverauthor}{%
\noindent\makebox[0em][l]{\makebox[8.5in]{%
\begin{tabular}{r}
{\Large Jim Hef{}feron}  \\[1ex]
{\large \url{http://joshua.smcvt.edu/linearalgebra}}
\end{tabular}}}
}

\endinput