recursively countable set 递归可数集合
hereditarily countable set 继承可数集合
at most countable set 至多可数集
countable infinite set 可数无限集 ; 可数无穷集
countable e set 可数集
countable dense set 可列稠密集
以上来源于: WordNet
This paper give the proofs of the Keal Function "a theorem that sum aggregate enumerable set is countable aggregate".
主要讨论了《实变函数论》中定理：“可数个可数集之并是可数集”的多种证明。
The relations of S-separation axioms in S-L space that has countable intersection property of seim-open set were obtained.
在具有半开集可数交性质的S-L空间中，讨论了几个S-分离性公理之间的关系。
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