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arXiv math/9811132math.RTmath.GR
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有限代数群的Irreducible Characters

Irreducible Characters of Finite Algebra Groups

Carlos A. M. Andre

摘要:

设F是q元有限域,A是有限维F-代数,J=J(A)是A的Jacobson根.则G=1+J是p-群,其中p是F的特征线.我们称G为F-代数群。G的一个子群H称为G的一个代数子群,如果对于J的某个乘闭F-子空间,H=1+U.本文用J的对偶空间上的G-轨道参数化了G的不可约复特征标,并证明了G的每一个不可约复特征标都是由G的某个代数子群的一个线性特征标导出的.

英文摘要:

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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