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On 31.12.2024 09:56, joes wrote:How can that be? If you have defined your FISODNs as being what's left of the elements of N after 'almost all' have been excluded from consideration in the new set, then multiplication is only a partial function.Am Mon, 30 Dec 2024 22:53:38 +0100 schrieb WM:>
Correction:
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The collection of definable natural numbers (FISONs) is closed under multiplication
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