Ω_Λ = 2/3 + δ/2π Bruce Camber, Independent ResearcherIn collaboration with Claude (Anthropic)with critical reviews from Grok and Perplexity, September 2026With formula-selection analysis by Simon Plouffe (private communication, September 2026) Abstract We present a parameter-free geometric conjecture for the dark energy fraction of the universe. Two exact facts about three-dimensional Euclidean geometry — the octahedral … Continue reading A Geometric Conjecture for the Dark Energy Fraction