The Wikipedia article on Countable Set, consulted for its lead-section facts.
Facts
Citation
PublisherWikimedia Foundation
URLhttps://en.wikipedia.org/wiki/Countable_set
Source TypeReference Work
Assessment
Reliability Tier2
General encyclopedia reference, actively edited; tier 2 matching the family's existing Wikipedia source entities. Sources
Countable Set (Wikipedia)
Wikimedia FoundationLead sectionQuote, Lead section
A mathematical set is countable if either it is finite or it can be put in one to one correspondence with the set of natural numbers.
Claims Backed By This Source (12 claims)
This source backs 12 claims across the atlas. As facts: 6 well-attested. As cited relationships: 1 holds, 3 connected. Plus 2 entities citing it as a general reference with no single fact or relationship attached.
Disposition By Topic
- Concepts, 8 claims: 2 well-attested, 1 holds, 3 connected, 2 general references.
- Sources, 4 claims: 4 well-attested.
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