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Mathlib.Order.UpperLower.Hom

UpperSet.Ici etc as Sup/sSup/Inf/sInf-homomorphisms #

In this file we define UpperSet.iciSupHom etc. These functions are UpperSet.Ici and LowerSet.Iic bundled as SupHoms, InfHoms, sSupHoms, or sInfHoms.

UpperSet.Ici as a SupHom.

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      @[simp]
      theorem UpperSet.iciSupHom_apply {α : Type u_1} [SemilatticeSup α] (a : α) :

      UpperSet.Ici as a sSupHom.

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          @[simp]
          theorem UpperSet.icisSupHom_apply {α : Type u_1} [CompleteLattice α] (a : α) :

          LowerSet.Iic as an InfHom.

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              @[simp]
              theorem LowerSet.iicInfHom_apply {α : Type u_1} [SemilatticeInf α] (a : α) :

              LowerSet.Iic as an sInfHom.

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                  @[simp]
                  theorem LowerSet.iicsInfHom_apply {α : Type u_1} [CompleteLattice α] (a : α) :