[GAP Forum] Re : How to find the value of character over generators

[Siddhartha Sarkar]

Dear John,
Accessing rows (which evaluates the character values) is just by calling :

gap> c := CharacterTable("L2(7)");
gap> Irr(c);

I am not sure how to access columns. You can check what are the available
options
for the stored data "c" (= the character table) by calling

gap>  KnownAttributesOfObject(c);
[ "Size", "NrConjugacyClasses", "Irr", "OrdersClassRepresentatives",
  "SizesCentralizers", "AutomorphismsOfTable", "UnderlyingCharacteristic",
  "ClassNames", "Identifier", "InfoText", "ComputedPowerMaps",
  "ComputedClassFusions", "NamesOfFusionSources", "CASInfo", "FusionToTom",
  "ProjectivesInfo", "ExtensionInfoCharacterTable" ]

best,
Siddhartha

On Wed, Jul 8, 2009 at 5:53 AM, MCKAY john <mckay at encs.concordia.ca> wrote:

>
>
>
> How to access a single row or column or entry of a character table
> in GAP?  There seems some anomalous behavior such that classes and
> irreducible representations are not treated similarly.
> Thanks,
> Jm
>
>