A single logarithmic-height witness bounds the combined charge of geometric bad primes and prescribed congruence primes.
theorem
CCDN.hypersurface_and_congruence_prime_charge
{L : Type u_1}
[Field L]
[CharZero L]
[IsAlgClosed L]
{n : ℕ}
(f : MvPolynomial (Fin (n + 1)) ℤ)
(hf : Irreducible ((MvPolynomial.map (Int.castRingHom L)) f))
(hd : 0 < f.totalDegree)
(H : ℝ)
(hH : 1 ≤ H)
(hcoeff : CoefficientHeightLE f H)
(bad P : Finset ℕ)
(hbad : ∀ p ∈ bad, stepanovThreshold f.totalDegree < p ∧ HypersurfaceBadReduction f p)
(hP : ∀ p ∈ P, Nat.Prime p)
:
Multiplying a constructed bad-prime witness by the congruence modulus keeps the combined prime charge within one logarithm of their log heights.