Table of contents : Finite simple groups and their subgroups....Pages 1-57 Topics in the theory of representations of finite groups....Pages 58-87 Algebraic K-theory, morita theory, and the classical groups....Pages 88-117 Modular representations of reductive groups....Pages 118-154 Differential algebraic groups....Pages 155-174 Conjugacy classes in algebraic groups....Pages 175-209 Some finite groups which appear as gal L/K, where K⊂Q(μ n )....Pages 210-230 Homomorphisms from linear groups over division rings to algebraic groups....Pages 231-265 A prehomogeneous vector space of characteristic 3....Pages 266-276 On full subgroups of twisted groups....Pages 277-288 A characterization of the 2-local subgroups of rudvalis group and Higman-Sims group....Pages 289-307 On 2-connectedness of geometries....Pages 308-313 On the number of p-blocks with given defect groups and some applications of the p-power homomorphism....Pages 314-339 The equitype and quasi-equitype decompositions of arbitrary permutations by permutations of order 2 or 3....Pages 340-360 On the extensions of abelian varieties by affine group schemes....Pages 361-387 On the first cartan invariant of the groups SL(3,p n ) and SU(3,p n )....Pages 388-400