add operator for free product
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@ -208,4 +208,5 @@ __END_OPTIONS_X__
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\newcommand\directlimit{\varinjlim}
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\newcommand\inverselimit{\varprojlim}
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\DeclareMathOperator*{\freeproduct}{\raisebox{-0.5ex}{\scalebox{2}{$\ast$}}}
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