schurLevel -- Number of SchurRings the ring is a tensor product of.

Synopsis

Usage:

lev = schurLevel(R)
Inputs:
- R, a ring,
Outputs:
- lev, an integer,

Description

For the representation ring R of a product of lev general linear groups, the function returns lev. If R is not a representation ring, then the function returns 0.

i1 : R = schurRing(QQ,r,3);

i2 : S = schurRing(R,s,5);

i3 : T = schurRing(S,t,2);

i4 : schurLevel R

o4 = 1

i5 : schurLevel S

o5 = 2

i6 : schurLevel T

o6 = 3

i7 : schurLevel QQ

o7 = 0

Ways to use schurLevel :

schurLevel(Ring)

For the programmer

The object schurLevel is a method function.