Polynomial coefficients in parameters and nodes #
The coefficients in Carlson's homogeneity recurrence are represented by genuine
multivariate polynomials, not by witnesses chosen for fixed parameters. The
coordinates are none for a, some (inl i) for bᵢ, and some (inr i) for zᵢ.
The R-functions have exponents -a-n. Formal differentiation in none therefore
provides the correction coefficients needed for the corresponding L-recurrence.
This constructs a universal homogeneity recurrence. It does not yet construct universal coefficient witnesses for arbitrary lists of associated shifts.
theorem
DirichletTransform.sum_carlsonAssociatedRecurrenceJointPolynomial_mul_rSlit
{ι : Type u_1}
[Fintype ι]
(a : ℂ)
(b : ι → ℂ)
{z : ι → ℂ}
(hz : z ∈ carlsonRSlitDomain)
:
∑ n ∈ Finset.range (Fintype.card ι + 1),
(MvPolynomial.eval (carlsonRecurrencePoint a b z)) (carlsonAssociatedRecurrenceJointPolynomial n) * regCarlsonRSlit (-a - ↑n) b z = 0
The same polynomial family gives the R-relation for every parameter and slit node.