of infinite sets as something that had cardinality. To better understand infinite sets, a notion of cardinality was formulated c. 1880 by Georg Cantor...
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rank among the infinite cardinals. Cardinality is defined in terms of bijective functions. Two sets have the same cardinality if, and only if, there is...
26 KB (3,808 words) - 01:08, 27 April 2024
term cardinality refers to the uniqueness of data values contained in a particular column (attribute) of a database table. The lower the cardinality, the...
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In set theory, the cardinality of the continuum is the cardinality or "size" of the set of real numbers R {\displaystyle \mathbb {R} } , sometimes called...
16 KB (2,375 words) - 13:31, 19 September 2024
Within data modelling, cardinality is the numerical relationship between rows of one table and rows in another. Common cardinalities include one-to-one,...
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Aleph number (category Cardinal numbers)
letter aleph (ℵ). The cardinality of the natural numbers is ℵ0 (read aleph-nought, aleph-zero, or aleph-null), the next larger cardinality of a well-ordered...
16 KB (1,957 words) - 08:24, 25 September 2024
Look up cardinality in Wiktionary, the free dictionary. Cardinality may refer to: Cardinality of a set, a measure of the "number of elements" of a set...
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Calculating the exact cardinality of the distinct elements of a multiset requires an amount of memory proportional to the cardinality, which is impractical...
13 KB (1,874 words) - 19:18, 21 September 2024
Set (mathematics) (section Cardinality)
statement that there is no set with cardinality strictly between the cardinality of the natural numbers and the cardinality of a straight line. In 1963, Paul...
41 KB (4,771 words) - 14:39, 2 November 2024
A cardinal (Latin: Sanctae Romanae Ecclesiae cardinalis; lit. 'cardinal of the Holy Roman Church') is a senior member of the clergy of the Catholic Church...
76 KB (8,181 words) - 06:01, 29 October 2024
Continuum hypothesis (category Cardinal numbers)
numbers is the same size (cardinality) as the set of integers: they are both countable sets. Cantor gave two proofs that the cardinality of the set of integers...
31 KB (3,922 words) - 05:33, 2 November 2024
The Arizona Cardinals are a professional American football team based in the Phoenix metropolitan area. The Cardinals compete in the National Football...
88 KB (7,001 words) - 22:49, 4 November 2024
Uncountable set (category Cardinal numbers)
numbers to X. The cardinality of X is neither finite nor equal to ℵ 0 {\displaystyle \aleph _{0}} (aleph-null). The set X has cardinality strictly greater...
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Power set (section Subsets of limited cardinality)
of subsets of S of cardinality less than or equal to κ is sometimes denoted by Pκ(S) or [S]κ, and the set of subsets with cardinality strictly less than...
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Look up Cardinal or cardinal in Wiktionary, the free dictionary. Cardinal or The Cardinal most commonly refers to Cardinalidae, a family of North and...
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set A is a subset of B, if and only if the cardinality of their intersection is equal to the cardinality of A. Formally: A ⊆ B if and only if | A ∩...
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Ordinal number (section Initial ordinal of a cardinal)
form a set of the same cardinality as the α-th number class. The cardinality of the (α + 1)-th number class is the cardinality immediately following that...
48 KB (6,712 words) - 03:10, 2 November 2024
Count-distinct problem (redirect from Weighted cardinality estimation)
the count-distinct problem (also known in applied mathematics as the cardinality estimation problem) is the problem of finding the number of distinct...
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Infinite set (redirect from Infinite cardinality)
if and only if for every natural number, the set has a subset whose cardinality is that natural number. If the axiom of choice holds, then a set is infinite...
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The Cardinal is a 1963 American drama film produced independently, directed by Otto Preminger and distributed by Columbia Pictures. The screenplay was...
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particular maximum-cardinality matching in which prioritized vertices are matched first. The problem of finding a maximum-cardinality matching in hypergraphs...
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Element (mathematics) (section Cardinality of sets)
known as cardinality; informally, this is the size of a set. In the above examples, the cardinality of the set A is 4, while the cardinality of set B...
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The College of Cardinals, more formally called the Sacred College of Cardinals, is the body of all cardinals of the Catholic Church. As of 28 October 2024...
32 KB (3,616 words) - 03:13, 13 October 2024
Separable space (section Cardinality)
of cardinality κ {\displaystyle \kappa } . Then X {\displaystyle X} has cardinality at most 2 2 κ {\displaystyle 2^{2^{\kappa }}} and cardinality at most...
14 KB (2,071 words) - 12:06, 2 March 2024
Equinumerosity (category Cardinal numbers)
Equinumerous sets are said to have the same cardinality (number of elements). The study of cardinality is often called equinumerosity (equalness-of-number)...
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The St. Louis Cardinals are an American professional baseball team based in St. Louis. The Cardinals compete in Major League Baseball (MLB) as a member...
233 KB (14,887 words) - 13:08, 27 October 2024
{\displaystyle 2^{\aleph _{0}}\!} , the cardinality of the power set of the natural numbers. The cardinality of the continuum is the size of the set of...
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Cardinals are senior members of the clergy of the Catholic Church. They are almost always bishops and generally hold important roles within the church...
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Transfinite number (redirect from Transfinite cardinal numbers)
are no intermediate cardinal numbers between ℵ 0 {\displaystyle \aleph _{0}} and the cardinality of the continuum (the cardinality of the set of real numbers):...
10 KB (1,232 words) - 08:58, 23 October 2024
uncountable cardinal κ: κ is weakly compact. for every λ<κ, natural number n ≥ 2, and function f: [κ]n → λ, there is a set of cardinality κ that is homogeneous...
7 KB (918 words) - 10:44, 31 October 2024