Liste des Groupes | Revenir à s math |
Jim Burns laid this down on his screen :
ω/2, ω/3, ω/10, ... are dark because no FISONs are availableö.A natural number can beBut can you have a non-empty set of undefined natural numbers?
definable and not defined.
Distinguishable but not distinguished? Discernible yet not discerned?Distinguishable but dark.
One should be able to discern each and every element at least enough to decide on membership.Since every number less than ω is finite, the decision is easy.
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