Weaken assumption of Diaconescu's theorem #214
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By using Prop*Prop instead of bool -> Prop, we can prove excluded middle from choice assuming extensionality for propositions only, not for predicates on bool.
jeanas
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The CI failure looks spurious/unrelated to me. |
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Reported CI failure at https://gitlab.alpinelinux.org/alpine/aports/-/issues/17657 |
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Thanks for merging! |
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By using Prop*Prop instead of bool -> Prop, we can prove excluded middle from choice assuming extensionality for propositions only, not for predicates on bool. This PR is a redux of rocq-prover/rocq#19871.