• Thumbnail for Cardinality
    term cardinality was coined for generalizing to infinite sets the concept of the number of elements. More precisely, two sets have the same cardinality if...
    77 KB (10,345 words) - 04:39, 13 June 2025
  • Thumbnail for Cardinal number
    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 (3,834 words) - 23:33, 1 June 2025
  • 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 (2,381 words) - 03:46, 28 April 2025
  • Within data modelling, cardinality is the numerical relationship between rows of one table and rows in another. Common cardinalities include one-to-one,...
    7 KB (629 words) - 15:18, 19 November 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...
    3 KB (411 words) - 08:20, 26 July 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...
    535 bytes (116 words) - 14:46, 2 November 2021
  • Thumbnail for Aleph number
    Aleph number (category Cardinal numbers)
    lowercase Greek letter omega), also has cardinality ℵ 0 {\displaystyle \aleph _{0}} . A set has cardinality ℵ 0 {\displaystyle \aleph _{0}} if and only...
    17 KB (2,453 words) - 20:41, 24 May 2025
  • Look up Cardinal or cardinal in Wiktionary, the free dictionary. Cardinal or The Cardinal most commonly refers to Cardinalidae, a family of North and...
    6 KB (725 words) - 23:14, 9 June 2025
  • Thumbnail for Set (mathematics)
    computation or estimation of the cardinality of finite sets. The cardinality of an infinite set is commonly represented by a cardinal number, exactly as the number...
    49 KB (7,041 words) - 08:59, 8 June 2025
  • Thumbnail for Maximum cardinality matching
    particular maximum-cardinality matching in which prioritized vertices are matched first. The problem of finding a maximum-cardinality matching in hypergraphs...
    10 KB (1,317 words) - 15:41, 14 June 2025
  • 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) - 17:02, 13 April 2025
  • Thumbnail for Cardinal (Catholic Church)
    A cardinal is a senior member of the clergy of the Catholic Church. As titular members of the clergy of the Diocese of Rome, they serve as advisors to...
    89 KB (9,716 words) - 22:53, 8 June 2025
  • 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)...
    14 KB (1,822 words) - 19:23, 26 May 2025
  • ordinals. That is, the successor cardinal is the cardinality of the least ordinal into which a set of the given cardinality can be mapped one-to-one, but...
    4 KB (564 words) - 06:38, 6 March 2024
  • of cardinality κ {\displaystyle \kappa } . Then X {\displaystyle X} has cardinality at most 2 2 κ {\displaystyle 2^{2^{\kappa }}} and cardinality at most...
    15 KB (2,090 words) - 10:21, 10 February 2025
  • In set theory, the concept of cardinality is significantly developable without recourse to actually defining cardinal numbers as objects in the theory...
    4 KB (589 words) - 13:10, 13 December 2023
  • 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...
    6 KB (884 words) - 06:49, 8 April 2025
  • Thumbnail for Ordinal number
    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 (6,703 words) - 04:03, 30 May 2025
  • 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) - 22:28, 13 March 2025
  • 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...
    32 KB (4,061 words) - 17:25, 15 April 2025
  • refined with respect to cardinality. A theory is κ-categorical (or categorical in κ) if it has exactly one model of cardinality κ up to isomorphism. Morley's...
    10 KB (1,157 words) - 04:00, 24 March 2025
  • Thumbnail for Cardinality equals variety
    members are related by chromatic transposition. In diatonic set theory cardinality equals variety when, for any melodic line L in a particular scale S,...
    3 KB (314 words) - 08:09, 9 February 2022
  • set, and I is a linearly independent set, then the cardinality of I is not larger than the cardinality of G. In particular if V is finitely generated, then...
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  • example, the cardinality of ω 0 = ω {\displaystyle \omega _{0}=\omega } is ℵ 0 {\displaystyle \aleph _{0}} , which is also the cardinality of ω 2 {\displaystyle...
    4 KB (651 words) - 04:10, 14 June 2025
  • Thumbnail for Subset
    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 ∩...
    11 KB (1,734 words) - 18:05, 12 March 2025
  • Thumbnail for Infinite set
    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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  • A of cardinality κ that is homogeneous for f. That is, for every n, the function f is constant on the subsets of cardinality n from A. A cardinal κ is...
    5 KB (550 words) - 23:28, 1 April 2025
  • Thumbnail for Power set
    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...
    21 KB (2,479 words) - 08:13, 23 April 2025
  • Thumbnail for The Cardinal
    The Cardinal is a 1963 American drama film produced independently, directed by Otto Preminger and distributed by Columbia Pictures. The screenplay was...
    15 KB (1,356 words) - 13:29, 8 May 2025
  • Beth number (category Cardinal numbers)
    is equal to c {\displaystyle {\mathfrak {c}}} , the cardinality of the continuum (the cardinality of the set of the real numbers), and the third beth...
    14 KB (2,234 words) - 08:46, 15 June 2025