ValuationSubring.mem_principalUnitGroup_iff

∀ {K : Type u} [inst : Field K] (A : ValuationSubring K) (x : Kˣ), x ∈ A.principalUnitGroup ↔ A.valuation (↑x - 1) < 1

Defined in: Mathlib.RingTheory.Valuation.ValuationSubring
Cited by: 1 results in Mathlib
Foundations: Depth 81 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Field

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