tsum_comp_le_tsum_of_inj

∀ {α : Type u_1} {β : Type u_4} {f : α → ℝ},
  Summable f → (∀ (a : α), 0 ≤ f a) → ∀ {i : β → α}, Function.Injective i → tsum (f ∘ i) ≤ tsum f

Defined in: Mathlib.Topology.Algebra.InfiniteSum.ENNReal
Cited by: 0 results in Mathlib
Foundations: Depth 156 from the axioms · uses propext, Classical.choice, Quot.sound

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