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Am Wed, 20 Nov 2024 13:04:04 +0100 schrieb WM:
All successors are natural numbers. If all can be counted, then no successors remain.Try to count to a natural number that has fewer successors thanBecause there are no such numbers.
predecessors. Impossible.
That is a foolish excuse.But set theory claims that all natural numberset your quantifiers in order:
can be counted to such that no successors remain.
every single natural numberEvery number that can be counted to is finite. But every number that can be counted to has more successors than predecessors. Therefore not every number can be counted to.
is very clearly finite;
the cardinal number correspondingThe set of all numbers that can be counted to is finite, namely a number that is counted to. This cannot change by counting.
to the set of all of them is countably infinite.
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