Primitive Far-Wall Flux First Survives at Order Four with Coefficient 64
Expanding the fixed primitive carrier at a remote moving wall gives exact rational coefficients for each residual moment ratio. Under
the first two response layers cancel. The next combined ratio coefficient is , and the leading scale therefore yields
Thus the primitive flux is structurally increasing at sufficiently remote walls. Its first nonzero response occurs precisely at order four, matching the mixed-fourth-cumulant reduction and explaining why covariance, hazard, and three-copy arguments could not determine the sign.
Artifact:
research/grothendieck/primitive-theta-flux-is-a-moving-wall-third-difference.md