Irreducible Characters of Finite Algebra Groups

Details Irreducible Characters of Finite Algebra Groups Irreducible Characters of Finite Algebra Groups

1998-11-23

arxiv.org/abs/math/9811132v1

Mathematics

Representation Theory

19 pages, Latex2e (amsart), uses amssymb and amsfonts. Submitted to the Journal of Group Theory

Scientific paper

Let F be a finite field with q elements, let A be a finite dimensional F-algebra and let J=J(A) be the Jacobson radical of A. Then G=1+J is a p-group, where p is the characteristic of F. We refer to G as an F-algebra group. A subgroup H of G is said to be an algebra subgroup of G if H=1+U for some multiplicatively closed F-subspace of J. In this paper, we parametrize the irreducible complex characters of G in terms of G-orbits on the dual space of J. Moreover, we prove that every irreducible complex character of G is induced from a linear character of some algebra subgroup of G.

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