Subtle cardinal
id:
subtle-cardinal-184-84404
title:
Subtle cardinal
text:
In mathematics, subtle cardinals and ethereal cardinals are closely related kinds of large cardinal number. A cardinal κ is called subtle if for every closed and unbounded C ⊂ κ and for every sequence δ < κ of length κ such that A δ ⊂ δ for all δ < κ, there exist α, β, belonging to C, with α < β, such that A α = A β ∩ α. A cardinal κ is called ethereal if for every closed and unbounded C ⊂ κ and for every sequence δ < κ of length κ such that A δ ⊂ δ and A δ has the same cardinality as δ for arbi
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Subtle_cardinal
date created:
2003-09-25T02:25:30Z
date modified:
2024-09-07T06:39:12Z
main entity:
{"identifier":"Q7632240","url":"https://www.wikidata.org/entity/Q7632240"}
image:
fields total:
13
integrity:
14