Rat.RingOfIntegers.isUnit_iff

∀ {x : NumberField.RingOfIntegers ℚ}, IsUnit x ↔ ↑x = 1 ∨ ↑x = -1

Defined in: Mathlib.NumberTheory.NumberField.Units.Basic
Cited by: 1 results in Mathlib
Foundations: Depth 152 from the axioms · uses propext, Classical.choice, Quot.sound

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