摘要
用收敛类刻划了满足第二可数公理的空间,并得到一个充要条件.
ln the paper,the second countability axiom is described from the theory of convergence classes,and in the meantimem,it is obtained a sufficient and necessary for a space to satisfy the second countability axiom.
出处
《河北师范大学学报(自然科学版)》
CAS
1995年第1期13-15,共3页
Journal of Hebei Normal University:Natural Science