Based on PFUS, this paper rigorously proves that the 45° coaxial double-cone frustum geometry is rigidly, globally and consistently isomorphic to symplectic geometry and symplectic space. Starting from primitive geometry, it proves that the double-cone coupling surface naturally forms a symplectic manifold, and the global operator β₁ and dimension evolution mechanism satisfy the core axioms of symplectomorphism, symplectic invariance and closed 2-forms. It establishes a complete one-to-one correspondence between PFUS and symplectic spaces, proving that PFUS is the unique ontological geometric realization of symplectic geometry at the cosmic level, providing a unified and closed primordial explanation for gravity, quantum theory, phase-space dynamics, conservation laws and symmetries. No external assumptions, free parameters or logical gaps are introduced; the system is fully self-consistent.
Zhenmin Wang (Thu,) studied this question.