Four-Dimensional Conical Cosmology: Complete Derivation

This is a simplified, concise overview of the Four-Dimensional Conical Cosmology Model, based on the core framework of the Pythagorean Circular Platform (Bi's Circular Platform). This brief version is designed to help readers quickly grasp the main ideas and key conclusions without going into detailed derivations. For the complete, rigorous, full derivation (Version 3.3, the final authoritative version), please see the full paper at: https://doi.org/10.5281/zenodo.19547117 All official citations and subsequent updates should refer to this full Version 3.3.