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Theorems · Theorem · field theory

Polynomial.isUnit_iff

∀ {R : Type u} [inst : Semiring R] [NoZeroDivisors R] {p : Polynomial R}, IsUnit p ↔ ∃ r, IsUnit r ∧ Polynomial.C r = p

Characterization of a unit of a polynomial ring over an integral domain R. See Polynomial.isUnit_iff_coeff_isUnit_isNilpotent when R is a commutative ring.

Defined in
Mathlib.Algebra.Polynomial.Degree.Units
Cited by
10 results in Mathlib
Foundations
Depth 106 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
SemiringNoZeroDivisors

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