摘要
指出 Dn ■ ∪{Em: m ∈ N}对 σ-空间成立,但对 ∑*-空间,·我们给出了一个例子说明它是不成立的.因而[5]中的引理3.2.13是不对的.这样[3]中的主要结论需要重新考虑.
in the note, we point out that Dn ■ ∪{Em: m ∈ N} is true for J-spaces we give an example to show that it is not true for ∑*-space. Thus the Leona 3.2.13 appeared in [5] is false. As a result, the main conclusion of [3] should be considered again.
出处
《数学进展》
CSCD
北大核心
2000年第4期354-356,共3页
Advances in Mathematics(China)