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Theorems · Theorem · general topology

IsUltrametricDist.nnnorm_sum_eq_sup_of_pairwise_ne

∀ {M : Type u_1} {ι : Type u_2} [inst : SeminormedAddCommGroup M] [IsUltrametricDist M] {s : Finset ι} {f : ι → M},
  ((↑s).Pairwise fun i j => ‖f i‖₊ ≠ ‖f j‖₊) → ‖∑ i ∈ s, f i‖₊ = s.sup fun i => ‖f i‖₊
Defined in
Mathlib.Analysis.Normed.Group.Ultra
Cited by
1 results in Mathlib
Foundations
Depth 115 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
SeminormedAddCommGroupIsUltrametricDist

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