3558 — The Hidden Relative Response Is Exactly the Doubled Green Forcing Defect
For reciprocal tails
the doubled Green identity is
The two local adjoint responses are and . Hence
and the Green forcing defect is exactly . Meanwhile the common response vanishes on the completed scalar-zero domain.
Thus the two-port response split is source-native: the scalar section and the Green obstruction are its common and relative coordinates. The next residual is the common-path term left by primitive boundary transfer.
Checker result: 96/96.