Homeomorph.prodUnique

(X : Type u_1) → (Y : Type u_2) → [inst : TopologicalSpace X] → [inst_1 : TopologicalSpace Y] → [Unique Y] → X × Y ≃ₜ X

X × {*} is homeomorphic to X.

Defined in: Mathlib.Topology.Homeomorph.Lemmas
Cited by: 3 results in Mathlib
Foundations: Depth 75 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: TopologicalSpace TopologicalSpace Unique

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