摘要
20 0 0年 ,数学家 N .Kemoto,K.Tam ano和 Y.Yajima证明了两个特殊的 GO-空间——序数乘积子空间的亚紧性 ,screenability,弱 submetalindelof性是等价的 .本文把这个命题推广到了两个一般的 GO-空间乘积的任意子空间上 ,证明了它们仍然是等价的 .
In 2000, mathematicians N.Kemoto, K. Tamano and Y.Yajima proved that metacompactness, screenability and weak submetalindelofness are equivalent for all subspaces of product of two ordinals. Now we will generalize this result and prove that they are also equivalent for all subspaces of product of two GO-spaces.
出处
《数学的实践与认识》
CSCD
北大核心
2003年第3期113-118,共6页
Mathematics in Practice and Theory