In response to the critical challenge that “the biconical closed model lacks a concrete numerical value for the curvature radius of large-scale structure at 45° dynamic equilibrium, ” this paper starts from the Biconical Convergence Formula - the core achievement of the PFUSRC system - and completes a rigorous derivation of the curvature radius. Main Results: 1. Under the 45° dynamic equilibrium condition (ΔA=0), the explicit expression for the curvature radius is: R = (12/11) × Lₑq × √2, where Lₑq is jointly determined by the spatial distribution of the 55 global steady-state datum points and the prime density constraint ρ (n) ~ 1/ln n. 2. Numerical evaluation yields: R ≈ 3. 8×10⁸ light-years (within the 3. 2–4. 4×10⁸ light-years interval). 3. This value completely covers the gravitational equilibrium range of 80 million to 800 million light-years reported by the Sloan Digital Sky Survey and the James Webb Space Telescope, and lies squarely within that interval. Theoretical Significance: This paper is the first in the PFUSRC system to present a testable hard numerical prediction and to perform a quantitative verification directly against observational literature. The Biconical Convergence Formula is no longer merely a geometric construction; it becomes the computational, observable, and falsifiable core of a physical theory.
Zhenmin Wang (Tue,) studied this question.