【摘要】 本文给出一类除环上左向量空间等于无限可数个真子空间的集合并的一些性质。更多还原

【Abstract】 In this note, some properties are given, one of which is that a left vecter space V over divison ring is equal to (■)V_i, here V_i is a proper subspace ot V (i∈N) and N is the set of natural number.更多还原