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Mathlib.CategoryTheory.ObjectProperty.Opposite

The opposite of a property of objects #

The property of objects of Cแต’แต– corresponding to P : ObjectProperty C.

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      The property of objects of C corresponding to P : ObjectProperty Cแต’แต–.

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          The bijection Subtype P.op โ‰ƒ Subtype P for P : ObjectProperty C.

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              @[simp]
              theorem CategoryTheory.ObjectProperty.op_ofObj {C : Type u} [CategoryStruct.{v, u} C] {ฮน : Type u_1} (X : ฮน โ†’ C) :
              (ofObj X).op = ofObj fun (i : ฮน) => Opposite.op (X i)
              @[simp]
              theorem CategoryTheory.ObjectProperty.unop_ofObj {C : Type u} [CategoryStruct.{v, u} C] {ฮน : Type u_1} (X : ฮน โ†’ Cแต’แต–) :
              (ofObj X).unop = ofObj fun (i : ฮน) => Opposite.unop (X i)