BU27 Microscopic Mean Vanishing and Orthogonal Covariance Cancellation under Dynamic Completeness and Single-Universe Boundary Consistency

Abstract This note proves the exact vanishing of microscopic feedback contribution under dynamic completeness and single-universe boundary consistency. The central claim is that microscopic fluctuation does not become a lawful retained contribution once the physically admissible microscopic domain is fixed by the mother structure, the dynamic completeness interface, the single-universe boundary condition, and the non-drifting boundary value. The proof proceeds through two structural mechanisms. First, the admissible microscopic entropy-gradient is projected into a zero-mean fast subspace, which eliminates its spatial average before global retention can begin. Second, the slow residual-driving field and the…