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[Merged by Bors] - feat: port CategoryTheory.Monoidal.Mon_ #4763

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[Merged by Bors] - feat: port CategoryTheory.Monoidal.Mon_ #4763

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b3bff58
feat: port CategoryTheory.Monoidal.Mon_
Jun 6, 2023
aa50b71
Initial file copy from mathport
Jun 6, 2023
4cf7014
automated fixes
Jun 6, 2023
130bfb8
initial fixes
Jun 6, 2023
db16463
fixes
Jun 7, 2023
9ced909
compiles
Jun 7, 2023
4f1bc26
remove spurious discrete_cases
Jun 7, 2023
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1 change: 1 addition & 0 deletions Mathlib.lean
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Expand Up @@ -897,6 +897,7 @@ import Mathlib.CategoryTheory.Monoidal.Functor
import Mathlib.CategoryTheory.Monoidal.FunctorCategory
import Mathlib.CategoryTheory.Monoidal.Functorial
import Mathlib.CategoryTheory.Monoidal.Linear
import Mathlib.CategoryTheory.Monoidal.Mon_
import Mathlib.CategoryTheory.Monoidal.NaturalTransformation
import Mathlib.CategoryTheory.Monoidal.OfChosenFiniteProducts.Basic
import Mathlib.CategoryTheory.Monoidal.OfChosenFiniteProducts.Symmetric
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7 changes: 6 additions & 1 deletion Mathlib/CategoryTheory/DiscreteCategory.lean
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Expand Up @@ -117,7 +117,12 @@ attribute [local tidy] tactic.discrete_cases
/- Porting note: rewrote `discrete_cases` tactic -/
/-- A simple tactic to run `cases` on any `discrete α` hypotheses. -/
macro "discrete_cases" : tactic =>
`(tactic| casesm* Discrete _, (_ : Discrete _) ⟶ (_ : Discrete _), PLift _)
`(tactic| fail_if_no_progress casesm* Discrete _, (_ : Discrete _) ⟶ (_ : Discrete _), PLift _)

open Lean Elab Tactic in
/-- Wrapper for `discrete_cases` so `aesop_cat` can call it. -/
def discreteCases : TacticM Unit := do
evalTactic (← `(tactic| discrete_cases))

instance [Unique α] : Unique (Discrete α) :=
Unique.mk' (Discrete α)
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2 changes: 0 additions & 2 deletions Mathlib/CategoryTheory/Limits/Shapes/Multiequalizer.lean
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Expand Up @@ -414,7 +414,6 @@ variable [HasProduct I.left] [HasProduct I.right]
@[reassoc (attr := simp)]
theorem pi_condition : Pi.lift K.ι ≫ I.fstPiMap = Pi.lift K.ι ≫ I.sndPiMap := by
ext
discrete_cases
simp
#align category_theory.limits.multifork.pi_condition CategoryTheory.Limits.Multifork.pi_condition

Expand Down Expand Up @@ -613,7 +612,6 @@ variable [HasCoproduct I.left] [HasCoproduct I.right]
@[reassoc (attr := simp)]
theorem sigma_condition : I.fstSigmaMap ≫ Sigma.desc K.π = I.sndSigmaMap ≫ Sigma.desc K.π := by
ext
discrete_cases
simp
#align category_theory.limits.multicofork.sigma_condition CategoryTheory.Limits.Multicofork.sigma_condition

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