UniformSpace.nhds_basis_clopens

∀ {X : Type u_1} [inst : UniformSpace X] [IsUltraUniformity X] (x : X),
  (nhds x).HasBasis (fun s => x ∈ s ∧ IsClopen s) id

Defined in: Mathlib.Topology.UniformSpace.Ultra.Basic
Cited by: 1 results in Mathlib
Foundations: Depth 71 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: UniformSpace IsUltraUniformity

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