Bruno Marchal skrev:
> 4) The set of all natural numbers. This set is hard to define, yet I
> hope you agree we can describe it by the infinite quasi exhaustion by
> {0, 1, 2, 3, ...}.
>
Let N be the biggest number in the set {0, 1, 2, 3, ...}.
Exercise: does the number N+1 belongs to the set of natural numbers,
that is does N+1 belongs to {0, 1, 2, 3, ...}?
--
Torgny Tholerus
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