I am interested in representation theory, harmonic analysis, group theory, matrices over local rings, finite abelian groups, and combinatorics.
I have written a book: Representation Theory: A Combinatorial Viewpoint.
24 What are your favorite instructional counterexamples? mar 23 '13
23 why study Lie algebras? mar 17 '11
16 Do mutually dual finite vector spaces have the same orbit cardinalities under a linear group action? aug 2 '13
14 Are wild problems related to undecidable ones? aug 29 '11
13 Counting representations of $k[x,y]$ when $k$ is finite sep 12 '13
13 Automorphism group of a finite group oct 16 '13
13 Old books still used dec 29 '12