Liste des Groupes | Revenir à s math |
We'd better define:0 is not an ordinal. See the recent olympic games. No starter number 0 has been seen, let alone won a medal.
A set of ordinals is /Mückenheim complete/ iff each and every
ordinal in the set (except 0)
has an immediate predecessorIf ω exists, it proves the completeness of the whole set of ordinals. Why should any ordinals be missing? Because Cantor could not see them?
(which precedes it).
Theorem: {0, 1, 2, 3, ... ω} is not Mückenheim complete. :-)
Though it's not clear what's missing here. :-)Think over that!
Les messages affichés proviennent d'usenet.