Mathematics – Representation Theory
Scientific paper
2010-03-16
Mathematics
Representation Theory
15 pages
Scientific paper
We give upper bounds for the number of irreducible representations of dimension at most n for a compact semisimple Lie group. In particular, we prove that there are at most n irreducible representations of dimension at most n for a simple compact Lie group. We use this prove that the number of conjugacy classes of maximal subgroups of a compact simple Lie group is O(r) where r is the Lie rank. We also give a short proof that the dimensions of the weight spaces of a maximal torus are small relative to the dimension of an irreducible module.
Guralnick Robert
Larsen Michael
Manack Corey
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