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Hello GAP forum!

I'm trying to compute the character for the representation of the action

of a Weyl group on the cosets of a maximal Weyl subgroup. I found the command

"PermutationCharacter" which seems to do what I want for small groups

but for larger ones gives me the following:

---

gap> PermutationCharacter(we7p,we7u7);

Error, Variable: 'cl' must have a value at

Add( c,

Number( DoubleCosets( G, U, Subgroup( Parent( G ), [ cl[i].representative ]

) ), function ( x ) ... end ) ) ... in

GroupOps.PermutationCharacter( arg[1], arg[2] ) called from

arg[1].operations.PermutationCharacter( arg[1], arg[2] ) called from

PermutationCharacter( we7p, we7u7 ) called from

main loop

---

I have the groups defined as permutation groups on the root vectors.

Do I need to define some other variable? Are my groups just too big?

Any help anyone can send will be appreciated!

Thanks,

Amy

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