2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/228961A covariant functor from the category of the complex tori to the category of the Effros-Shen algebras is constructed. The functor maps isomorphic complex tori to the stably isomorphic Effros-Shen algebras. Our construction is based on the Teichmueller theory of the Riemann surfaces.8 pages; 2 figures; final version; to appear New York J. Math. Available online at: http://nyjm.albany.edu/j/2009/15-6.htmlAlgebraic GeometryOperator Algebras14H52; 46L85text