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2026-02-09 16:32:55 UTC
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Jon Sterling on Nostr: nprofile1q…g47dl W-types are foundationally extremely weak — they are no stronger ...

W-types are foundationally extremely weak — they are no stronger than having a natural numbers object, and therefore exist in every non-finitist model of constructive mathematics that anyone would ever consider. That is why constructive type theorists do not have any concerns about W-types.