CARDINALITY

cardinality

(noun) (mathematics) the number of elements in a set or group (considered as a property of that grouping)

Source: WordNet® 3.1


Etymology

Noun

cardinality (plural cardinalities)

(set theory, of a set) The number of elements a given set contains.

(data modeling, databases) The property of a relationship between a database table and another one, specifying whether it is one-to-one, one-to-many, many-to-one, or many-to-many.

(religion) The status of a cardinal.

Usage notes

(set theory): The cardinality of an infinite set is an infinite cardinal number. The smallest such number, called aleph-null and denoted ℵ₀, describes the natural numbers; the next is aleph-one. While it is known that the cardinality of the real numbers is greater than aleph-null, it is the subject of the still unproven continuum hypothesis that it equals aleph-one.

Synonyms

• (in set theory): power

Source: Wiktionary



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Word of the Day

23 February 2025

BARGAIN

(noun) an advantageous purchase; “she got a bargain at the auction”; “the stock was a real buy at that price”


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Coffee Trivia

According to Guinness World Records, the largest coffee shop is the Al Masaa Café, which has 1,050 seats. The coffee shop was inaugurated in Riyadh, Saudi Arabia, on 13 August 2014.

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