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Theorems · Definition · field theory

Polynomial.natSepDegree

{F : Type u} → [inst : Field F] → Polynomial F → ℕ

The separable degree Polynomial.natSepDegree of a polynomial is a natural number, defined to be the number of distinct roots of it over its splitting field. This is similar to Polynomial.natDegree but not to Polynomial.degree, namely, the separable degree of 0 is 0, not negative infinity.

Defined in
Mathlib.FieldTheory.SeparableDegree
Cited by
53 results in Mathlib
Foundations
Depth 153 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
Field

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