theorem PiBase.WellDefined.semiregularSpace : WellDefined SemiregularSpace

theorem PiBase.Homeomorph.semiregularSpace {X : Type u_1} {Y : Type u_2} [TopologicalSpace X] [TopologicalSpace Y] [SemiregularSpace X] (f : X ≃ₜ Y) : SemiregularSpace Y