设G是有限群,H△G.如果H≈^2B2(q)或H≈^2G2(q)或H≈PSU(3,q).则G不与任何射影平面的点传递直射群同构.本文对以下问题给出了一般方法:证明以某些几乎单群为点传递自同构群的线性空间不是射影平面.
Let G be a finite group and H△G. If H≈^2B2(q) or H≈^2G2(q) or H ≈PSU(3, q), then G can not be isomorphic to a point-transitive collineation group of any projective plane. The method used can be generalized to prove that a linear space admitting a point-transitive automorphism group isomorphic to some almost simple group is not a projective plane.