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Theorems · Theorem · sequences and series

dist_le_tsum_dist_of_tendsto

∀ {α : Type u_1} [inst : PseudoMetricSpace α] {f : ℕ → α} {a : α},
  (Summable fun n => dist (f n) (f n.succ)) →
    Filter.Tendsto f Filter.atTop (nhds a) → ∀ (n : ℕ), dist (f n) a ≤ ∑' (m : ℕ), dist (f (n + m)) (f (n + m).succ)
Defined in
Mathlib.Topology.Algebra.InfiniteSum.Real
Cited by
1 results in Mathlib
Foundations
Depth 156 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
PseudoMetricSpace

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