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[Merged by Bors] - chore(CategoryTheory/Limits/Shapes/SequentialProduct): remove an erw #38519

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[Merged by Bors] - chore(CategoryTheory/Limits/Shapes/SequentialProduct): remove an erw #38519

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4 changes: 2 additions & 2 deletions Mathlib/CategoryTheory/Limits/Shapes/SequentialProduct.lean
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Original file line number Diff line number Diff line change
Expand Up @@ -201,14 +201,14 @@ noncomputable def isLimit : IsLimit (cone f) where
rw [cone_π_app_comp_Pi_π_neg f _ _ h]
simp only [dite_eq_ite, Functor.ofOpSequence_obj, limit.lift_π_assoc, Fan.mk_pt,
Discrete.functor_obj_eq_as, Fan.mk_π_app, Category.assoc]
slice_lhs 2 4 => erw [← functorMap_commSq f h]
slice_lhs 2 4 => simp only [← dite_eq_ite, ← functorMap_commSq f h]
simp
uniq s m h := by
apply Pi.hom_ext
intro n
simp only [Functor.ofOpSequence_obj, dite_eq_ite, limit.lift_π, Fan.mk_pt,
Fan.mk_π_app, ← h ⟨n + 1⟩, Category.assoc]
slice_rhs 2 3 => erw [cone_π_app_comp_Pi_π_pos f (n + 1) _ (by lia)]
slice_rhs 2 3 => simp only [← dite_eq_ite, cone_π_app_comp_Pi_π_pos f (n + 1) n (by lia)]
simp

section
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