Disjoint.frontier_left

∀ {X : Type u} [inst : TopologicalSpace X] {s t : Set X}, IsOpen t → Disjoint s t → Disjoint (frontier s) t

Defined in: Mathlib.Topology.Closure
Cited by: 2 results in Mathlib
Foundations: Depth 62 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: TopologicalSpace

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