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The point is that it doesn't recognize that the two classes are the

same, nor does it even recognize that the class generated by

ConjugacyClass is a class (in the list g.conjugacyClasses) at all.

This is bug in 3.1 which is fixed in 3.2:

gap> g:=TwoGroup(8,4);;

gap> ConjugacyClasses(g);;

gap> t:=ConjugacyClass(g,g.3);

ConjugacyClass( Group( a1, a2, a3 ), a3 )

gap> g.conjugacyClasses[2];

ConjugacyClass( Group( a1, a2, a3 ), a3 )

gap> t = g.conjugacyClasses[2];

true

gap> Position(g.conjugacyClasses,t);

2

gap> VERSION;

"Version 3 Release 2"

best wishes

Frank Celler

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