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Theorems · Definition · commutative algebra

MvPolynomial.sumRingEquiv

(R : Type u) →
  (S₁ : Type v) →
    (S₂ : Type w) → [inst : CommSemiring R] → MvPolynomial (S₁ ⊕ S₂) R ≃+* MvPolynomial S₁ (MvPolynomial S₂ R)

The ring isomorphism between multivariable polynomials in a sum of two types, and multivariable polynomials in one of the types, with coefficients in multivariable polynomials in the other type.

Defined in
Mathlib.Algebra.MvPolynomial.Equiv
Cited by
8 results in Mathlib
Foundations
Depth 88 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes
CommSemiring

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Cited by8

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