RingEquiv.toRatAlgEquiv

{R : Type u_1} →
  {S : Type u_2} →
    [inst : Ring R] → [inst_1 : Ring S] → [inst_2 : Algebra ℚ R] → [inst_3 : Algebra ℚ S] → R ≃+* S → R ≃ₐ[ℚ] S

Reinterpret a RingEquiv as a ℚ-algebra isomorphism. This actually yields an equivalence, see RingEquiv.equivRatAlgEquiv.

Defined in: Mathlib.Algebra.Algebra.Hom.Rat
Cited by: 8 results in Mathlib
Foundations: Depth 87 from the axioms · uses propext, Classical.choice, Quot.sound
Assumes: Ring Ring Algebra Algebra

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