This paper reconstructs the electromagnetic U (1) sector within the PSOC4 (3) closure framework. In standard physics, U (1) functions as the gauge symmetry associated with electromagnetism and charge conservation. Here, we propose a deeper ontological interpretation: U (1) is the conserved curvature-phase residue preserved when the 3. 141D coherence-curvature equilibrium resolves into 3. 000D spatial closure. The residual 0. 141D-type aperture is not treated as a literal spatial dimension or fixed energy unit, but as the structural source-band through which electromagnetic phenomena become possible. On this basis, the electromagnetic field tensor F₌ₔ ₍ₔ is interpreted as the bivectorial organization of directed and circulatory curvature, corresponding to the electric and magnetic field components. Electromagnetic duality becomes the internal self-rotation of this U (1) residue under the Hodge dual operation. Photon emission is then described as the quantized null release of curvature-phase during closure transitions, with E = hν representing the energy of a specific emitted closure quantum rather than the structural residue itself. Charge is interpreted as localized anchoring of U (1) residue, current as its transport, and radiation as its unanchored propagation. This framework preserves the standard formal role of U (1), Maxwellian field structure, electromagnetic duality, and photon quantization while offering a unified explanation for why electromagnetism is phasegoverned, long-range, dual, and radiational. In this reconstruction, electromagnetism is the visible expression of unclosed curvature preserved by spatial closure.
Philip Lilien (Sun,) studied this question.