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Theorems · Theorem · field theory

Polynomial.splits_iff_card_roots

∀ {R : Type u_1} [inst : CommRing R] {f : Polynomial R} [inst_1 : IsDomain R], f.Splits ↔ f.roots.card = f.natDegree

A polynomial splits if and only if it has as many roots as its degree.

Defined in
Mathlib.Algebra.Polynomial.Splits
Cited by
11 results in Mathlib
Foundations
Depth 139 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
CommRingIsDomain

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Cites10

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