Liste des Groupes | Revenir à s math |
Le 22/04/2024 à 19:27, Moebius a écrit :Because we finite beings (except of Chuch Norris of course) cannot count infinitely many object, that's why, Mückenheim.
A /countable set/ S (as defined in the context of set theory) is NOT "countable" because it can be counted (and/or there is someone who can count its elements), but because there is an injective function f such that f maps IN onto S.Why can't it be counted?
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