Equivalence of Channel and Barrier Derivations of μ

T59 establishes the equivalence of the channel-interference and barrier-holonomy derivations of the reduced rotational invariant \ (\) within the Q5 transport architecture. The theorem shows that the antisymmetric rotational coefficient obtained from effective-channel interference and the coefficient obtained from barrier-mediated holonomy reduce to the same invariant structure after an admissible projection into the reduced defect sector. The result, therefore, identifies the two constructions not as competing mechanisms, but as equivalent reduced descriptions of the same mediated antisymmetric transport invariant. The theorem is structurally important because it demonstrates consistency between distinct reduction pathways in the Q5 framework. Rather than depending on a particular decomposition picture, the reduced rotational coefficient survives as a common invariant under the admissible reduction pipeline. This strengthens the interpretation of \ (\) as a genuine reduced-sector transport invariant rather than a decomposition artifact. T59 also foreshadows the later residual ecology architecture developed in the TA-series, where mediated transport, projection, and reduced-sector elimination repeatedly produce equivalent effective structures across multiple derivational viewpoints. Status: solid for the equivalence of the reduced antisymmetric invariant under the stated reduction and projection assumptions; conditional on normalization and admissible reduction conventions used in the reduced defect sector; speculative for any claim that the microscopic physical mechanisms are ontologically identical rather than reduced-sector equivalent.