On the 4D Cosmic Ontology of Bicone Structure, Pythagorean Frustum Model, and the Unified Origin of Convex, Concave, and Transition Functions

Key Points

• To establish a theoretical framework for understanding the 4D universe through bicone structures.
• Introduced the 45° coaxial bicone as the ontological structure.
• Developed the Pythagorean Frustum as the universal model.
• Unified convex, concave, and transition functions based on these structures.
• Established a relationship between geometric structures and mathematical functions.
• Identified the lower bicone, upper bicone, and middle frustum layer as critical components of the model.