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📚 The CoCalc Library - books, templates and other resources

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1
\makeatletter

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\newdimen\errorsize \errorsize=0.2pt

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% Frame with a label at top

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\newcommand\LabFrame[2]{%

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    \fboxrule=\FrameRule

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    \fboxsep=-\errorsize

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    \textcolor{FrameColor}{%

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    \fbox{%

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      \vbox{\nobreak

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      \advance\FrameSep\errorsize

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      \begingroup

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        \advance\baselineskip\FrameSep

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        \hrule height \baselineskip

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        \nobreak

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        \vskip-\baselineskip

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      \endgroup

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      \vskip 0.5\FrameSep

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      \hbox{\hskip\FrameSep \strut

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        \textcolor{TitleColor}{\textbf{#1}}}%

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      \nobreak \nointerlineskip

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      \vskip 1.3\FrameSep

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      \hbox{\hskip\FrameSep

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        {\normalcolor#2}%

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        \hskip\FrameSep}%

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      \vskip\FrameSep

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    }}%

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}}

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\definecolor{FrameColor}{rgb}{0.25,0.25,1.0}

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\definecolor{TitleColor}{rgb}{1.0,1.0,1.0}

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\newenvironment{contlabelframe}[2][\Frame@Lab\ (cont.)]{% 

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  % Optional continuation label defaults to the first label plus

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  \def\Frame@Lab{#2}%

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  \def\FrameCommand{\LabFrame{#2}}%

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  \def\FirstFrameCommand{\LabFrame{#2}}%

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  \def\MidFrameCommand{\LabFrame{#1}}%

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  \def\LastFrameCommand{\LabFrame{#1}}%

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  \MakeFramed{\advance\hsize-\width \FrameRestore} 

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}{\endMakeFramed} 

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\newcounter{definition}

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\newenvironment{definition}[1]{%

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  \par

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  \refstepcounter{definition}%

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  \begin{contlabelframe}{Definition \thedefinition:\quad #1}

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 \noindent\ignorespaces}

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{\end{contlabelframe}} 

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\makeatother

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