AI & Computingpreprint2026-08-01

Collatz Conjecture: Undecidable Iteration Revealing Limits of Algorithmic Solvability — E8 Intelligence Research

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Abstract

FINDING: Collatz Conjecture is a simple iterative arithmetic problem (3n+1) proven undecidable for general computation, highlighting limits of algorithmic solvability. | MATH: f(n) = n/2 if n even; f(n) = 3n+1 if n odd. No closed-form solution or known attractor ratio. | CONNECTION: No direct geometric ratio or crystallographic symmetry. The iteration's orbit lengths show no harmonic constant (0.618, 1.618, etc.) in known data. | DEPTH: 6 — profound for computability theory, but no geometric or constant-based structure revealed. FINDING: Hilbert's Entscheidungsproblem (Decision Problem) proven unsolvable by Turing (1936) — no algorithm can decide truth of all mathematical statements. | MATH: Halting problem undecidability: no Turing machine can determine if arbitrary program halts. Formalized via diagonalization. | CONNECTION: No ratios or symmetries. Rooted in logical structure, not geometric. | DEPTH: 9 — foundational to computation theory, but no numeric constants or harmonic patte Author: Andrew Stewart Caldin, Independent Researcher, UK. Part of the E8 Intelligence Research series. Platform: e8intelligence.com

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View paper (DOI)Open access versionOpenAlexZenodo (CERN European Organization for Nuclear Research)Published 2026-08-01

Authors: Andrew Stewart Caldin