instAlgebra — Mathlib

English

The S-algebra structure on A(0) is induced from the S-algebra structure on R via the grade-zero subalgebra.

Русский

Структура S-алгебра на A(0) индуцирована из S-алгебры на R через подполуголь A(0).

LaTeX

$$There is an Algebra S (A_0) induced from Algebra S R via the grade-zero subalgebra.$$

Lean4

/-- The `S`-algebra `A 0` inherited from `R` in the presence of `SetLike.GradedMonoid A`. -/
instance instAlgebra : Algebra S (A 0) :=
  inferInstanceAs <| Algebra S (subalgebra A)

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