Set.Countable.exists_pos_forall_sum_le

∀ {ι : Type u_4} {s : Set ι},
  s.Countable → ∀ {ε : ℝ}, 0 < ε → ∃ ε', (∀ (i : ι), 0 < ε' i) ∧ ∀ (t : Finset ι), ↑t ⊆ s → ∑ i ∈ t, ε' i ≤ ε

Defined in: Mathlib.Analysis.SpecificLimits.Basic
Cited by: 1 results in Mathlib
Foundations: Depth 157 from the axioms · uses propext, Classical.choice, Quot.sound

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