91 lines
3.5 KiB
TeX
91 lines
3.5 KiB
TeX
\NeedsTeXFormat{LaTeX2e}
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\ProvidesPackage{mkessler-proof}
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%%%% This package will be developed for proofs with automatic references to theorems
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% for claims numbered within these profos
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% and for nice subproof / proof of claim environments
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\newif\ifmkessler@proof@english\mkessler@proof@englishtrue
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\DeclareOption{german}{\mkessler@proof@englishfalse}
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\DeclareOption*{\PackageWarning{mkessler-proof}{Unknown '\CurrentOption'}}
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\ProcessOptions\relax
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\RequirePackage{amssymb}
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\RequirePackage{amsthm}
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\RequirePackage{etoolbox}
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\RequirePackage{xparse}
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%%Give claim an own counter and let it reset at each proof
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%See also at:
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%https://tex.stackexchange.com/questions/283502/reset-counter-at-beginning-of-proof
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\newtheorem{claim}{\ifmkessler@proof@english Claim\else Behauptung\fi}
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\newtheorem*{claim*}{\ifmkessler@proof@english Claim\else Behauptung\fi}
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\AtBeginDocument{\def\claimautorefname{\ifmkessler@proof@english Claim\else Behauptung\fi}}
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\newif\ifhyperref
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\AtBeginDocument{
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\@ifpackageloaded{hyperref}{
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\hyperreftrue
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\def\grab#1{\expandafter\@firstoffive#1}
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\def\mkessler@proof@blankref#1{\expandafter\grab\csname r@#1\endcsname}
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\let\mkessler@proof@autoref\autoref
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}{
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\hyperreffalse
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\let\mkessler@proof@blankref\ref
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\let\mkessler@proof@autoref\ref
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}
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}
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\NewDocumentEnvironment{rproof}{m O{}}{\def\mkessler@proof@aster{\relax}\begin{mkessler@fancythm@rproof@impl}{#1}[#2]}{\end{mkessler@fancythm@rproof@impl}}
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\NewDocumentEnvironment{rproof*}{m O{}}{\def\mkessler@proof@aster{*}\begin{mkessler@fancythm@rproof@impl}{#1}[#2]}{\end{mkessler@fancythm@rproof@impl}}
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\NewDocumentEnvironment{mkessler@fancythm@rproof@impl}{m O{}}
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{
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% Restore correct counter for claim
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\ifcsdef{themkessler@proof@#1@save@claim}{
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\setcounter{claim}{\value{mkessler@proof@#1@save@claim}}
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\def\mkessler@proof@proofprefix{\ifmkessler@proof@english Continuation of proof\mkessler@proof@aster\space of\else Fortsetzung des Beweises\mkessler@proof@aster\space zu\fi}
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\edef\haha{\value{mkessler@proof@#1@part}}
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}{
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\newcounter{mkessler@proof@#1@save@claim}
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\setcounter{claim}{0}
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\def\mkessler@proof@proofprefix{\ifmkessler@proof@english Proof\mkessler@proof@aster\space of\else Beweis\mkessler@proof@aster\space von\fi}
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}
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% Set up counter number printing as subindexed by numbering of the reference
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\let\mkessler@proof@theoldclaim\theclaim
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\def\theclaim{\mkessler@proof@blankref{#1}.\mkessler@proof@theoldclaim}
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% Now, start the actual proof
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\begin{proof}[\mkessler@proof@proofprefix\space\mkessler@proof@autoref{#1}\if\relax\detokenize{#2}\relax\else\space(#2)\fi]
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}
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{
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\end{proof} % End proof
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% Save current claim counter for later restoration
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\setcounter{mkessler@proof@#1@save@claim}{\value{claim}}
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}
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%%subproof environment - essentially copied proof environment from amsthm and modified its name + symbol
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\DeclareRobustCommand{\blackqed}{%
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\ifmmode \mathqed
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\else
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\leavevmode\unskip\penalty9999 \hbox{}\nobreak\hfill
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\quad\hbox{$\blacksquare$}%
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\fi
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}
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\newenvironment{subproof}[1][\ifmkessler@proof@english Subproof\else Unterbeweis\fi]{\par
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\pushQED{\blackqed}%
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\normalfont \topsep6\p@\@plus6\p@\relax
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\trivlist
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\item[\hskip\labelsep
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\itshape
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#1\@addpunct{.}]\ignorespaces
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}{%
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\popQED\endtrivlist\@endpefalse
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}
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%%%% This might be dropped, but for now is collected here
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%%Solution (for exercises)
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\newenvironment{solution}[1][]{\begin{proof}[\ifmkessler@proof@english{}Solution\else{}Lösung\fi{}#1]}{\end{proof}}
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