Case-I source-large coefficient and uniform Σ₁₂ interface #
The coefficient cutoff and the Claim-14.6 cutoff are selected before the later
Case-I constants. In particular, the Σ₁₂ theorem below has C and K
inside the universal quantifier following D₀; its API contains no post-K
eventual quantifier.
Quantitative source-large replacement for
eventually_caseISourceOrderCoefficient_le_sameC_gap.
The witness C1min is selected before C1,K,D,A.
The three endpoint constants have a fixed upper bound under the common
scale C ≥ max 3 (A*C145). This is the Amax supplied to the quantitative
source-order theorem above.
The natural-ceiling Σ₁₂ same-constant contraction with one Claim-14.6
cutoff selected before the varying sieve S, then before C, K, the depth
N, and the coordinate s. The threshold is genuinely source-uniform: it is
the Claim-14.6 cutoff, which depends only on H, d, and Δ.
Compatibility specialization of the threshold-uniform-in-S contraction.