Documentation

Mathlib.Order.Category.Frm

The category of frames #

This file defines Frm, the category of frames.

References #

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def Frm :
Type (u_1 + 1)

The category of frames.

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    instance Frm.instCoeSortType :
    CoeSort Frm (Type u_1)
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    instance Frm.instFrameα (X : Frm) :
    Order.Frame ↑X
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    • X.instFrameα = X.str
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    def Frm.of (α : Type u_1) [Order.Frame α] :
    Frm

    Construct a bundled Frm from a Frame.

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      @[simp]
      theorem Frm.coe_of (α : Type u_1) [Order.Frame α] :
      ↑(Frm.of α) = α
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      instance Frm.instInhabited :
      Inhabited Frm
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      @[reducible, inline]
      abbrev Frm.Hom (α : Type u_1) (β : Type u_2) [Order.Frame α] [Order.Frame β] :
      Type (max u_2 u_1)

      An abbreviation of FrameHom that assumes Frame instead of the weaker CompleteLattice. Necessary for the category theory machinery.

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      Instances For
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        instance Frm.bundledHom :
        CategoryTheory.BundledHom Frm.Hom
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        • One or more equations did not get rendered due to their size.
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        instance Frm.instConcreteCategory :
        CategoryTheory.ConcreteCategory Frm
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        instance Frm.hasForgetToLat :
        CategoryTheory.HasForget₂ Frm Lat
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        • One or more equations did not get rendered due to their size.
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        @[simp]
        theorem Frm.Iso.mk_hom_toFun {α : Frm} {β : Frm} (e : ↑α ≃o ↑β) (a : ↑α) :
        (Frm.Iso.mk e).hom a = e a
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        @[simp]
        theorem Frm.Iso.mk_inv_toFun {α : Frm} {β : Frm} (e : ↑α ≃o ↑β) (a : ↑β) :
        (Frm.Iso.mk e).inv a = e.symm a
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        def Frm.Iso.mk {α : Frm} {β : Frm} (e : ↑α ≃o ↑β) :
        α ≅ β

        Constructs an isomorphism of frames from an order isomorphism between them.

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        • One or more equations did not get rendered due to their size.
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          @[simp]
          theorem topCatOpToFrm_map :
          ∀ {X Y : TopCatᵒᵖ} (f : X ⟶ Y), topCatOpToFrm.map f = TopologicalSpace.Opens.comap f.unop
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          @[simp]
          theorem topCatOpToFrm_obj (X : TopCatᵒᵖ) :
          topCatOpToFrm.obj X = Frm.of (TopologicalSpace.Opens ↑(Opposite.unop X))
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          def topCatOpToFrm :
          CategoryTheory.Functor TopCatᵒᵖ Frm

          The forgetful functor from TopCatᵒᵖ to Frm.

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          • One or more equations did not get rendered due to their size.
          Instances For
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            instance CompHausOpToFrame.faithful :
            (compHausToTop.op.comp topCatOpToFrm).Faithful
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