openAI-math-dataset / lean /OAI /NumberTheory /PiExponent /Jets /AffineJetCoefficientInterface.lean
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import OAI.NumberTheory.PiExponent.Jets.AffineJetPolynomial
namespace OAI
noncomputable section
namespace PiExponent.AffineJetCoefficientInterface
open AlgebraicGeometry CategoryTheory
open PiExponentSeshadri.Geometry
open PiExponent.ExceptionalAffineChart
variable {X : Scheme} {R : Type} [CommRing R]
variable (j : Spec (CommRingCat.of R) ⟶ X) [IsOpenImmersion j]
variable (A : LineBundle X)
def Frame : Type := A.sheaf.restrict (chartOpen j).1.ι ≅ structureSheaf (chartOpen j).1.toScheme
def Sections (n : ℕ) : Type := GlobalSections X (modulePow X A.sheaf n)
def coefficient (n : ℕ) (e : Frame j A) : Sections A n → R :=
AffineJetPolynomial.polynomialCoefficient j A n e
theorem coefficient_eq (n : ℕ) (e : Frame j A) (s : Sections A n) :
coefficient j A n e s = AffineJetPolynomial.polynomialCoefficient j A n e s := rfl
end PiExponent.AffineJetCoefficientInterface
end
end OAI