Mathlib Map

Theorems · Inductive type · functional analysis

AddGroupNorm

(G : Type u_6) → [AddGroup G] → Type u_6

A norm on an additive group G is a function f : G → ℝ that preserves zero, is subadditive and such that f (-x) = f x and f x = 0 → x = 0 for all x.

Defined in
Mathlib.Analysis.Normed.Group.Seminorm
Cited by
16 results in Mathlib
Foundations
Depth 1 from the axioms · uses no axioms
Assumes
AddGroup

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