PFUS Unified Cosmic System: Complete Overview, Core Concepts, Fundamental Formulas and Systematic Summary of 10 Core Papers

This paper serves as the final, complete, authoritative summary and closing document of the 10 core papers of the Pythagorean Frustum Unified System (PFUS). It integrates the full theoretical framework, unified core concepts, standard fundamental formulas, logical hierarchy, structural coherence, and academic significance of the entire system. All definitions, symbols, formulas, and structural relations are uniformly specified as the ultimate standard for publication, archiving, and citation. This paper formally completes the entire PFUS theoretical system.