define opposites even if just have cayley table.
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@ -866,6 +866,11 @@ InstallMethod( Opposite, "for magma",
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M -> ConstructorFromTable(M)( TransposedMat( MultiplicationTable( M ) ) )
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);
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InstallMethod( Opposite, "for magma",
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[ IsMagma and HasCayleyTable], # mult table easy if Cayley table there
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M -> ConstructorFromTable(M)( TransposedMat( MultiplicationTable( M ) ) )
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);
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#############################################################################
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## DISPLAYING QUASIGROUPS AND LOOPS
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## -------------------------------------------------------------------------
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