[GAP Forum] indecomposable representations

David Joyner wdjoyner at gmail.com
Thu Dec 28 14:41:14 GMT 2006

Butske, William D wrote:
> I'm wondering if GAP has any facilities for computing indecomposable
> integral representations, in particular for finite cyclic groups.  
> Thanks,
> Bill Butske

I think the answer is "not directly" but you can get useful
information using the commands CharacterTable, Irr, RationalizedMat, and
ContainedDecomposables. The chapter 69-71 of the reference manual
describes these.

- David Joyner

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