/usr/share/gap/lib/semitran.gd is in gap-libs 4r7p5-2.
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#W semitran.gd GAP library Isabel Araújo and Robert Arthur
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#Y Copyright (C) 1997, Lehrstuhl D für Mathematik, RWTH Aachen, Germany
#Y (C) 1998 School Math and Comp. Sci., University of St Andrews, Scotland
#Y Copyright (C) 2002 The GAP Group
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## This file contains the declarations for basics of transformation semigroup
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DeclareSynonym("IsTransformationSemigroup", IsSemigroup and
IsTransformationCollection);
DeclareSynonym("IsTransformationMonoid", IsMonoid and
IsTransformationCollection);
DeclareProperty("IsFullTransformationSemigroup", IsSemigroup);
DeclareSynonym("IsFullTransformationMonoid", IsFullTransformationSemigroup);
DeclareGlobalFunction("FullTransformationSemigroup");
DeclareSynonym("FullTransformationMonoid", FullTransformationSemigroup);
DeclareAttribute("DegreeOfTransformationSemigroup", IsTransformationSemigroup);
DeclareAttribute("IsomorphismPermGroup", IsGreensHClass);
DeclareAttribute("IsomorphismTransformationSemigroup", IsSemigroup);
DeclareAttribute("IsomorphismTransformationMonoid", IsSemigroup);
DeclareOperation("HomomorphismTransformationSemigroup",
[IsSemigroup, IsRightMagmaCongruence]);
DeclareAttribute("AntiIsomorphismTransformationSemigroup", IsSemigroup);
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