Gradient Residuals - The Calculus of Clearance - Research Note XI: The Recursive Self-Registration Cascade

Essay XI derives the complete Level-0 through Level-3 RSR cascade, bringing Phase III to 75% saturation. Essay IX established the Level-1 architecture and the grain-normalised RSR threshold crossing. Essay X derived the RSR operator GIII = Gᵣaw/ (1+ρₙ), the four threshold conditions T. RC1/T. RC4/T. RC2/T. RC3, the Phase III amplification law T. AMP, the Terminal Identity T. TI, and T. NPF (No Phase IV). Essay XI derives: the cascade recurrence relations and their exact arithmetic (T. RRR) ; the formal self-registration condition using the same 1/d discriminability threshold as T. RC1, establishing the nature of nothing's recursion as retrospective (D. NRN) ; the Level-3 self-registration surplus of 387, 775× (T. SRC3) ; the convergence of Φₑff to Δ at rate Nₛat^ (-n) (T. FCP) ; the local update frequency suppression at each level (T. LUF) ; and the structural memory nature of the RSR denominator. The essay closes with the precise input specification for Essay XII.