Four-Dimensional Arithmetic Under the 45° Conical Universe Model (Including Coupling Strength and Force Calculation)

Based on the 45° conical universe model and the unified standardized four-dimensional structural unit ₄F, this paper systematically constructs a complete four-dimensional arithmetic system including addition, subtraction, division, and multiplication. It clarifies the physical meaning, mathematical expression, coupling constant rules, and physical quantity enhancement laws of each operation, and directly links the theoretical system to several unexplained anomalies in cosmic observations. The result is a logically self-consistent, formally concise, and PDF-stable complete theoretical chapter. In this system, addition and multiplication correspond to real physical processes, while subtraction and division serve as formal mathematical supplements. The framework provides unified underlying mathematical support for cosmic structure evolution, higher-dimensional space theory, and structural computing.