Last Updated:2025/11/22
(set theory, of a set) That is both countable and infinite; having the same cardinality as the set of natural numbers; formally, such that a bijection exists from ℕ to the set.
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countably infinite
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Source Word
countably infinite
Adjective
not-comparable
of a set
Japanese Meaning
可算無限:数え上げ可能な無限集合、すなわち自然数全体と同じ濃度(カーディナリティ)を持つ集合 / 自然数集合 ℕ と一対一に対応可能な無限集合 / 順序を付けて数えることができる無限集合