Metric.exists_eball_subset_eball

∀ {α : Type u} [inst : PseudoEMetricSpace α] {x y : α} {ε : ENNReal},
  y ∈ Metric.eball x ε → ∃ ε' > 0, Metric.eball y ε' ⊆ Metric.eball x ε

Defined in: Mathlib.Topology.EMetricSpace.Defs
Cited by: 2 results in Mathlib
Foundations: Depth 128 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: PseudoEMetricSpace

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