[GAP Forum] Faithful irreducible characters

[Burkhard Höfling]

Dear Saad Awaid,

On 30.04.2009, at 21:00, Saad Awaid wrote:

> L1:=List(Ir1,x->KernelOfCharacter(x)=1);


"1" cannot be used for the trivial subgroup in GAP --- instead,  
please use `TrivialSubgroup'

gap> L1:=List(Ir1,x->KernelOfCharacter(x)=TrivialSubgroup (Gps[1]));

or check if the size is 1.

gap> L1:=List(Ir1,x->Size(KernelOfCharacter(x))=1);

[ false, false, false, false, false, false, false, true, true, true,  
true, true, true, true, true,
   true, true, true, true, true, true, true, true, true, true, true,  
true, true, true, true, true,
   true, true, true, true, true, true, true, true, true, true, true,  
true, true, true, true, true,
   true, true ]

Cheers,

Burkhard Höfling.