证明了弱自反余奇异算子全体构成(广义)闭、满射算子理想,由其生成的空间理想是满射空间理想.此外,还推广了Gonzalez M及Herrera J M的一个结果,并举反例说明其必要性不成立.
Proves the whole of weak reflexive cosingular operators constitute a closed and surjective general operator ideal and the space ideal generated by them is also surjective. In addition, one result of Gonzalez M and Herrera J M is generalized, the necessity of which is proved to be not true.