Injective choice functions for countable families
Injective choice functions for countable families
复制标题
可数族的内射选择函数
DOI:
10.1016/0095-8956(76)90025-3
复制
发表时间:
1976
期刊:
影响因子:
--
通讯作者:
K. Steffens
中科院分区:
文献类型:
--
作者:
K. Podewski;K. Steffens
This paper proves a necessary and sufficient condition for an arbitrary countable family of sets to have an injective choice function. Some applications are indicated.