Rogers-Ramanujan Continued Fraction at q=e^{-2π/5} and Quintic Solutions — E8 Intelligence Research
FINDING: The Rogers-Ramanujan continued fraction (RRCF) at \(q=e^{-2\pi/5}\) is an algebraic number expressible via the golden ratio, and the RRCF itself solves the general quintic. | MATH: Let \(R(q)=q^{1/5}\prod_{n=1}^\infty \frac{(1-q^{5n-1})(1-q^{5n-4})}{(1-q^{5n-2})(1-q^{5n-3})}\). For \(q=e^{-2\pi/5}\), the classical result (Ramanujan) is: \[ R(e^{-2\pi/5}) = \sqrt{\frac{5+\sqrt{5}}{2}} - \frac{1+\sqrt{5}}{2} = \sqrt{5}\,\varphi^{-1} - \varphi^{-1} = \varphi^{-1}(\sqrt{5}-1) \] where \(\varphi = \frac{1+\sqrt{5}}{2}\). Numerically: \(R \approx 0.6180339887 \times 1.236067977 \approx 0.7639320225\). More precisely, \(R(e^{-2\pi/5}) = \frac{\sqrt{5}-1}{2}\cdot\frac{\sqrt{5}+1}{2}?\) — check: \(\sqrt{5}\,\varphi^{-1} = \sqrt{5}\cdot\frac{2}{1+\sqrt{5}} = \frac{2\sqrt{5}}{1+\sqrt{5}}\). Rationalize: \(\frac{2\sqrt{5}(1-\sqrt{5})}{1-5} = \frac{2\sqrt{5}-10}{-4} = \frac{5-\sqrt{5}}{2}\). Then subtract \(\varphi^{-1} = \frac{\sqrt{5}-1}{2}\): \[ R = \frac{5-\sqrt{5}}{2} - \frac{ Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com
Authors
- Andrew Stewart Caldin
Publication Details
- Journal
- Zenodo (CERN European Organization for Nuclear Research)
- Published
- 2026-10-12
- DOI
- https://doi.org/10.5281/zenodo.23309842
- Primary Topic
- Advanced Mathematical Identities
- Type
- preprint