[ refactor ] Data.Fin.Properties.decFinSubset
#2793
+36
−25
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JacquesCarette
approved these changes
Aug 1, 2025
MatthewDaggitt
requested changes
Aug 2, 2025
JacquesCarette
approved these changes
Aug 2, 2025
jamesmckinna
changed the title
Data.Fin.Properties.decFinSubsetData.Fin.Properties.decFinSubset
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@MatthewDaggitt can you re-review ahead of a possible merge? |
jamesmckinna
commented
Oct 11, 2025
src/Data/Fin/Properties.agda
Outdated
| ¬ (∀ i → P i) → (∃ λ i → ¬ P i) | ||
| ¬∀⟶∃¬ n P P? ¬P = map id proj₁ (¬∀⟶∃¬-smallest n P P? ¬P) | ||
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| -- Kleisli lifting of Dec over Unary subset relation |
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Hmm... this isn't actually Kleisli! My mistake, fix incoming...
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Hmm... some weird sync error. Have fast-forwarded with |
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Cherry-picked from #2744 . Almost purely cosmetic:
variables. NB. cf. Fix breaking introduction of variable inSemiring.Primality#2774 for problems with non-prenex use of such thingsall?to avoid use ofdecFinSubset(idiotic complexity blow-up)CHANGELOGNB.
DecFinSubset.consmakes successful use ofλ-and$-, but I don't seem able to do so forQ⊆P⇒Q⊆ₛPthanks to unsolved metas!?flip contradiction! [ add ] new name forflipped version ofRelation.Nullary.Negation.Core.contradiction#2784