摘要 : For the field F and F-vector space A, let G be a subgroup of GL(F,A), the group of invertibleF-linear transformations ofA. A subspace B of A is G-core-free if boolean AND(g is an element of G)gB = 0. In this article, we discuss gr... 展开 For the field F and F-vector space A, let G be a subgroup of GL(F,A), the group of invertibleF-linear transformations ofA. A subspace B of A is G-core-free if boolean AND(g is an element of G)gB = 0. In this article, we discuss groups G and vector spaces A such that every subspace of A is either G-invariant or G-core-free. 收起