IsUltrametricDist.isOpen_closedBall

∀ {X : Type u_1} [inst : PseudoMetricSpace X] [IsUltrametricDist X] (x : X) {r : ℝ},
  r ≠ 0 → IsOpen (Metric.closedBall x r)

Defined in: Mathlib.Topology.MetricSpace.Ultra.Basic
Cited by: 3 results in Mathlib
Foundations: Depth 118 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: PseudoMetricSpace IsUltrametricDist

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