Investigates deterministic prime-gap interiors using the Divisor Normalization Identity (DNI). Establishes the Gap Winner Rule (GWR) the raw-Z maximizer is always the leftmost min-d(n) carrier. Validates the No-Later-Simpler-Composite Theorem with zero violations through 10^18. Documents hierarchical first-arrival laws and square-phase terminal.

Independent re-derivations, measurements and negative results around the division table — with runnable verification code. No RH claims.

Validated curvature signal for integer structural classification. κ(n) = d(n)·ln(n)/e² separates primes from composites at 3.05× ratio with 88.2% hold-out accuracy. Core signal layer of the Z Framework. Includes CDL API, adaptive threshold protocol, Z-normalization, and falsification experiments. Active research: v-inference.

Preprint and exact computation for a conjecture on simultaneous monotone runs of Euler phi and sigma.