c = 1: The Limiting Speed as the Self-Dual Fixed Point, with an Injection–Mirror Laboratory Protocol (Research Note 10)

Research Note 10 of the INDYNA program. This note analyzes the self-dual point of the conjugate-shell operator family: the duality W H(g) W† = g·H(1/g) pairs every coupling g with its inverse, and the self-dual coupling plays a distinguished role in the level-crossing structure. Part of the numbered series (Notes 7–15) on the exactly solvable spectral theory of icosahedral networks.