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Don't define the proof environment if it's already defined.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@25877 a592a061-630c-0410-9148-cb99ea01b6c8
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@ -20,16 +20,18 @@ Input theorems-proof.inc
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#This is just a hacked version of the AMS proof environment
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Style Proof
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Preamble
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\newenvironment{proof}[1][\proofname]{\par
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\normalfont\topsep6\p@\@plus6\p@\relax
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\trivlist
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\itemindent\parindent
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\item[\hskip\labelsep
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\scshape
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#1]\ignorespaces
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}{%
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\endtrivlist\@endpefalse
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}
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\providecommand{\proofname}{Proof}
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\ifx\proof\undefined\
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\newenvironment{proof}[1][\proofname]{\par
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\normalfont\topsep6\p@\@plus6\p@\relax
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\trivlist
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\itemindent\parindent
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\item[\hskip\labelsep
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\scshape
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#1]\ignorespaces
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}{%
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\endtrivlist\@endpefalse
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}
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\providecommand{\proofname}{Proof}
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\fi
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EndPreamble
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End
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