Decomposition numbers and cartan invariants of Sp(4, q), q=2(n), for p=2

摘要

Let G be the 4-dimensional sympletic group on a finite field of q elements, q a power of 2. We. nd all the decomposition numbers of G in characteristic 2, corresponding to the unipotent characters of G. We also. nd some of the Cartan invariants of G for p = 2.