nnnorm_sub_le

∀ {E : Type u_5} [inst : SeminormedAddGroup E] (a b : E), ‖a - b‖₊ ≤ ‖a‖₊ + ‖b‖₊

Defined in: Mathlib.Analysis.Normed.Group.Basic
Cited by: 2 results in Mathlib
Foundations: Depth 114 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: SeminormedAddGroup

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