feat: lemmas about pure for {List,Array,Vector}.{mapM,foldlM,foldrM,anyM,allM,findM?,findSomeM?}#7356
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kim-em merged 5 commits intoleanprover:masterfrom Mar 10, 2025
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These are more general cases of the existing lemmas about `Id`.
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mapM, foldlM, and foldrMpure for mapM, foldlM, and foldrM
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Mathlib CI status (docs):
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pure for mapM, foldlM, and foldrMpure for {List,Array,Vector}.{mapM,foldlM,foldrM,anyM,allM}
eric-wieser
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Mar 6, 2025
| /-! ### mapM -/ | ||
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| @[simp] | ||
| theorem mapM_pure [Monad m] [LawfulMonad m] {xs : Vector α n} (f : α → β) : |
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@kim-em, do you want this in Monadic (which claims to only be about forIn), or in Lemmas which is where many other monadic lemmas are?
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Leave it in Monadic for now. I'll need to rehome these lemmas sometime.
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Thanks for taking on the rehoming!
pure for {List,Array,Vector}.{mapM,foldlM,foldrM,anyM,allM}pure for {List,Array,Vector}.{mapM,foldlM,foldrM,anyM,allM,findM?,findSomeM?}
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This PR adds lemmas reducing monadic operations with
pureto the non-monadic counterparts.