© 2002 by London Mathematical Society
© The London Mathematical Society
Cyclic, Separable and Semisimple Matrices in the Special Linear Groups Over a Finite Field
Mathematical Institute, University of Oxford 2429 St Giles, Oxford OX1 3LB
Received 21 May 2001. Revision received 21 March 2002.
A matrix A with minimum polynomial mA and characteristic polynomial cA is said to be cyclic if mA = cA, semisimple if mA has no repeated factors, and separable if it is both cyclic and semisimple. For any set T of matrices, we write CT for the proportion of cyclic matrices in T, SST for the proportion of semisimple matrices, and ST for the proportion of separable matrices. We will write CGL(
,q) for limd
CGL(d,q), and so on.