Combine the two height ranges under the paper's explicit leading-coefficient position condition. The main term retains the bad-prime factor of any finite prime set whose normalized comparison holds.
theorem
CCDN.hypersurfaceSmallThreshold_position
{n d : ℕ}
{B H L A T : ℝ}
(hd : 0 < d)
(hB : 0 ≤ B)
(hH : 0 < H)
(hL : 0 < L)
(hA : 0 ≤ A)
(hposition : Real.log H ≤ Real.log L + T * ↑d * degreeRoot n d)
:
hypersurfaceSmallThreshold n d B L A ≤ Real.exp (T / (↑n + 1)) * hypersurfaceSmallThreshold n d B H A
Replacing the coefficient height H by the leading height L in the small-height threshold
costs at most a factor exp (T / (n + 1)), provided log H ≤ log L + T d d^(1/(n+1)).
Explicit constant for the positioned absolutely irreducible case.
Equations
- One or more equations did not get rendered due to their size.
Instances For
theorem
CCDN.positioned_auxiliary_degree_of_comparison
{K : Type u_1}
[Field K]
[CharZero K]
[IsAlgClosed K]
{n d t : ℕ}
(order : MonomialOrder (Fin (n + 3)))
(f : MvPolynomial (Fin (n + 3)) ℤ)
(hf : f.IsHomogeneous d)
(hd : 0 < d)
(hir : Irreducible ((MvPolynomial.map (Int.castRingHom K)) f))
(H : ℝ)
(hH : 1 ≤ H)
(hcoeff : CoefficientHeightLE f H)
{B : ℝ}
{z : Fin t → IntPoint (n + 3)}
(hzB : IsPrimitiveBoxZeroFamily f B z)
(bad : Finset ℕ)
(hcomp : AuxiliaryRankComparison order f d z bad)
(T : ℝ)
(hT : 0 ≤ T)
(hposition : Real.log H ≤ Real.log |↑(order.leadingCoeff f)| + T * ↑d * degreeRoot n d)
:
∃ (M : ℕ),
↑M ≤ hypersurfacePositionedAuxiliaryConstant n T * auxDegreeBound n d B (primeSetFactor bad) H ∧ ∃ (g : MvPolynomial (Fin (n + 3)) ℤ), IsPointAuxiliary f g M z
The coefficient-sensitive auxiliary theorem for an absolutely irreducible
homogeneous equation satisfying explicit leading-coefficient positioning, for any
finite prime set bad for which the normalized comparison holds. Both height ranges
and the degree are constructed.