countably infinite
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countably infinite
adjective
- 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. 1953 [Addison-Wesley], Bruce Elwyn Meserve, Fundamental Concepts of Algebra, 1982, Dover, page 36, This one-to-one correspondence between the set of positive integers and the set of pairs of positive integers indicates that the set of pairs is countably infinite. Since the set of positive rational n
Talk about this word "countably infinite." Wiktionary, via Micwyn, micwyn.com/word/countably%20infinite. Accessed 6 Nov. 2026. countably infinite. (n.d.). In Wiktionary, via Micwyn. Retrieved November 6, 2026, from https://micwyn.com/word/countably%20infinite "countably infinite." Wiktionary, via Micwyn. Accessed November 6, 2026. https://micwyn.com/word/countably%20infinite.Cite this
@misc{countably_infinite_2026,
title = {countably infinite},
howpublished = {Wiktionary, via Micwyn},
year = {2026},
url = {https://micwyn.com/word/countably%20infinite},
urldate = {2026-11-06}
}
