[GAP Forum] Decomposing direct products of reps into irreps

[Vahid Dabbaghian]

Dear Krishna,

You can use the GAP package REPSN. The function "ConstituentsOfRepresentation" decomposes the given ordinary reducible representation to its irreducible constituents. You can contact me directly if you have any question about this package.

Regards
Vahid Dabbaghian

____________________________________________
Program Director
Modelling of Complex Social Systems (MoCSSy)
The IRMACS Centre (ASB 10905)
Simon Fraser University, BC Canada
Tel: 778-782-7854
http://mocssy.irmacs.sfu.ca/

----- Original Message -----
From: "krishna mohan" <trebauchet1986 at yahoo.co.in>
To: forum at gap-system.org
Sent: Thursday, March 18, 2010 10:07:32 AM GMT -08:00 US/Canada Pacific
Subject: [GAP Forum] Decomposing direct products of reps into irreps

Hi.....


        Suppose I take the direct product of two two-dimensional representations of D4...and then I want to decompose it as direct sum of irreducible representations of D4........

I need to do such decompositions quite often for my current project...

So I was wondering if GAP has anything built in to tackle the above task...

I searched the manual but came up with nought....

Krishna



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