EXTENSIONS OF SIMPLE MODULES FOR SPECIAL ALGEBRAIC-GROUPS

[摘要] We compute the groups Ext(G)l(L, M) for any two simple rational modules for the simple algebraic groups G of type C2 and F4 in characteristic 2 and type G2 in characteristic 3 by exploiting the special endomorphisms which exist for these groups. (C) 1994 Academic Press, Inc.

[发布日期] 1994-12-15