Dear GAP Forum,
Anvita wrote
> GAP sometimes fails to find class fusions for character tables one of
> which is modular:
>
> -------------------------------------
> c1:=CharacterTable(CyclicGroup(12));
> c2:=CharacterTable("U3(11)");
> PossibleClassFusions(c1,c2); # This line works fine (both
> tables ordinary)
> PossibleClassFusions(c1, c2 mod 11 ); # This one returns the following error:
> -------------------------------------
>
> Error, no method found! For debugging hints type ?Recovery from NoMethodFound
> [...]
The function `PossibleClassFusions' is not defined for the case
that one argument is a Brauer table and the other is an ordinary table,
see the GAP Reference Manual.
In the example shown above, the following should work.
PossibleClassFusions( c1 mod 11, c2 mod 11 );
All the best,
Thomas Breuer
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