Ctop.mem_nhds_toTopsp

∀ {α : Type u_1} {σ : Type u_3} (F : Ctop α σ) {s : Set α} {a : α}, s ∈ nhds a ↔ ∃ b, a ∈ F.f b ∧ F.f b ⊆ s

Defined in: Mathlib.Data.Analysis.Topology
Cited by: 2 results in Mathlib
Foundations: Depth 65 from the axioms · uses propext, Classical.choice, Quot.sound

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