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.
@[simp]
@[simp]
@[simp]
@[simp]