Liste des Groupes | Revenir à s math |
On 29.01.2025 10:36, FromTheRafters wrote:Yes, but some infinite sets don't have a first element. Perhaps you meant that if there is an infinite strictly monotonic increasing sequence of FISONs then there is a first FISON?on 1/29/2025, WM supposed :>On 29.01.2025 05:07, Richard Damon wrote:Still wrong.
>>>
YOU are the one that says there needs to be a "required" FISON.
If there is an infinite set, then it has a first element
It is Cantor's theorem that every set of ordinals has a first element. FISONs are v. Neumann ordinals.
Les messages affichés proviennent d'usenet.