• equivalent. Cofinality can be similarly defined for a directed set and is used to generalize the notion of a subsequence in a net. The cofinality of a partially...
    8 KB (1,308 words) - 13:17, 2 May 2024
  • there is a "larger element" in B Cofinality (mathematics), the least cardinality of a cofinal subset in this sense Cofinal (music), a part of some Gregorian...
    345 bytes (82 words) - 21:19, 27 October 2023
  • where the minimum possible cardinality of a cofinal subset of A {\displaystyle A} is referred to as the cofinality of A . {\displaystyle A.} Let ≤ {\displaystyle...
    8 KB (1,345 words) - 21:23, 27 October 2023
  • Thumbnail for Ordinal number
    The cofinality of any ordinal α is a regular ordinal, i.e. the cofinality of the cofinality of α is the same as the cofinality of α. So the cofinality operation...
    47 KB (6,717 words) - 10:52, 24 July 2024
  • Thumbnail for Aleph number
    cannot equal certain special cardinals with cofinality ℵ0. An uncountably infinite cardinal κ having cofinality ℵ0 means that there is a (countable-length)...
    16 KB (1,961 words) - 07:27, 27 July 2024
  • h ( I ) {\displaystyle h(I)} is cofinal in A . {\displaystyle A.} The set h ( I ) {\displaystyle h(I)} being cofinal in A {\displaystyle A} means that...
    14 KB (2,848 words) - 09:44, 6 July 2024
  • below, C, remained the lower limit. In addition to the range, the tenor (cofinal, or dominant, corresponding to the "reciting tone" of the psalm tones)...
    11 KB (1,368 words) - 19:31, 17 April 2024
  • an initial subsequence of the cf(κ)-sequence. Thus its cofinality is less than the cofinality of κ and greater than it at the same time; which is a contradiction...
    14 KB (2,328 words) - 05:18, 21 June 2024
  • mathematical theory, introduced by Saharon Shelah (1978), that deals with the cofinality of the ultraproducts of ordered sets. It gives strong upper bounds on...
    5 KB (768 words) - 09:50, 18 August 2023
  • Archimedean property is related to the concept of cofinality. A set X contained in an ordered set F is cofinal in F if for every y in F there is an x in X such...
    21 KB (2,974 words) - 05:47, 20 April 2024