PFUSRC‑014: Foundational Study on the Equivalence of Four‑Dimensional Space and Intrinsic Four‑Dimensional Spacetime — Establishment of Spacetime Benchmark for the PFUSRC Theoretical System

This paper independently integrates scattered spacetime theories dispersed in PFUSRC‑00, PFUSRC‑002 and PFUSRC‑13 into a systematic monograph. Based on the core 11‑dimensional triple coaxial bicone topology, two equivalent generation systems of four‑dimensional space are constructed. The first path derives spatial configuration via the spiral topological rule of “one generates two, two generates four” with explicit spiral parametric equations; the second path originates from symmetry breaking of novel primes and puts forward the PFUSRC Dimensional Generation Theorem (“One implies Three, Two implies Four”) to realize discrete number theory mapping onto continuous spatial geometry. Rigorous deduction verifies the core axiom that four‑dimensional space is inherently equivalent to intrinsic four‑dimensional spacetime within PFUSRC framework, where time emerges endogenously from topological deformation rather than being an artificially appended independent variable. The intrinsic topological eigenvalue =12/11 is embedded into the unified Bicone Convergence‑Expansion Formula to quantitatively characterize spacetime coupling relation. This paper strictly distinguishes PFUSRC endogenous four‑dimensional spacetime from the spliced spacetime of relativity, points out congenital defects of traditional fragmented spacetime framework including artificial space‑time separation and incapability of holistic coaxial rotation, and builds a novel static‑dynamic unified spacetime paradigm. All theoretical derivations keep consistent with verified macroscopic cosmology and microscopic quantum laws, and fundamentally solves the century‑long physical puzzles regarding the essential origin of time and the root cause of space‑time separation. As the benchmark document of PFUSRC spacetime system, two standardized four‑dimensional spacetime axioms are formally formulated for subsequent serial researches.