What does cofinality mean?
Definitions for cofinality
co·fi·nal·i·ty
This dictionary definitions page includes all the possible meanings, example usage and translations of the word cofinality.
Wikipedia
Cofinality
In mathematics, especially in order theory, the cofinality cf(A) of a partially ordered set A is the least of the cardinalities of the cofinal subsets of A. This definition of cofinality relies on the axiom of choice, as it uses the fact that every non-empty set of cardinal numbers has a least member. The cofinality of a partially ordered set A can alternatively be defined as the least ordinal x such that there is a function from x to A with cofinal image. This second definition makes sense without the axiom of choice. If the axiom of choice is assumed, as will be the case in the rest of this article, then the two definitions are equivalent. Cofinality can be similarly defined for a directed set and is used to generalize the notion of a subsequence in a net.
Numerology
Chaldean Numerology
The numerical value of cofinality in Chaldean Numerology is: 7
Pythagorean Numerology
The numerical value of cofinality in Pythagorean Numerology is: 6
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"cofinality." Definitions.net. STANDS4 LLC, 2024. Web. 29 Apr. 2024. <https://www.definitions.net/definition/cofinality>.
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