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On 17.11.2024 20:08, joes wrote:It is sometimes better to think of cardinality as a number indicating a notion of 'set size' rather than a notion of 'number many'. For finite sets these two notions merge.Am Sun, 17 Nov 2024 18:38:00 +0100 schrieb WM:>It is the "number" many. ℚ has all elements of ℕ and some more. Therefore the correct numbers are different.Of course. ℵo equals |ℕ|, equals |ℚ|, equals all countable sets. It isYes, those are all the same number.
simply another name for infinitely "many". |ℕ| however is a fixed
infinite number. Note that sets are invariable.
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