A Fit-Free Algebraic Derivation of the Standard Model Gauge Structure from the Octonion Algebra

This work presents a fit-free algebraic derivation of the Standard Model gauge structure within a single-axiom constraint framework. Starting from the axiom that constraint exists and restricting to the algebraic domain defined by multiplicative stability, the division property, and real finite-dimensional structure, Hurwitz’s theorem uniquely limits admissible algebras to ℝ, ℂ, ℍ, and 𝕆. A chirality condition eliminates ℝ, ℂ, and ℍ, selecting the octonion algebra 𝕆 uniquely. From the octonion multiplication structure, the automorphism group G₂ and its Lie algebra g₂ are derived, followed by the Standard Model gauge algebra su (3) ⊕ su (2) ⊕ u (1) through a stabilizer chain. The framework yields exact, parameter-free results including the grand-unification value sin²θW = 1/4, the existence of three fermion generations from the decomposition so (8) = g₂ ⊕ L ⊕ R, and a democratic mass matrix with fixed coupling ratio c/m = −1/2. All results are obtained as theorems with no empirical input or parameter fitting, establishing a continuous derivation from constraint principles to the algebraic structure underlying the Standard Model. Related resourcesAdditional preprints, theoretical frameworks, and ongoing work by the author are available at: https: //murad-ahmadov. github. io/