[Merged by Bors] - feat: port Data.Multiset.Basic #1491
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jcommelin
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Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com>
Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com>
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Mathlib/Data/Multiset/Basic.lean
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| decreasing_by exact card_lt_of_lt _h | ||
| #align multiset.strong_induction_on Multiset.strongInductionOnₓ -- Porting note: reorderd universes | ||
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| theorem strong_induction_eq {p : Multiset α → Sort _} (s : Multiset α) (H) : |
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What should this be called? Maybe strongInductionOn_eq would make more sense
Mathlib/Data/Multiset/Basic.lean
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| end | ||
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| @[ext] | ||
| theorem add_hom_ext [AddZeroClass β] ⦃f g : Multiset α →+ β⦄ (h : ∀ x, f {x} = g {x}) : f = g := |
Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com>
Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com>
Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com>
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Co-authored-by: ChrisHughes24 <chrishughes24@gmail.com> Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com> Co-authored-by: Reid Barton <rwbarton@gmail.com> Co-authored-by: qawbecrdtey <qawbecrdtey@kaist.ac.kr> Co-authored-by: Chris Hughes <33847686+ChrisHughes24@users.noreply.github.com>
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Co-authored-by: ChrisHughes24 <chrishughes24@gmail.com> Co-authored-by: Ruben Van de Velde <65514131+Ruben-VandeVelde@users.noreply.github.com> Co-authored-by: Reid Barton <rwbarton@gmail.com> Co-authored-by: qawbecrdtey <qawbecrdtey@kaist.ac.kr> Co-authored-by: Chris Hughes <33847686+ChrisHughes24@users.noreply.github.com>
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