2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/101049An algebraic deformation theory of algebras over the Landweber-Novikov algebra is obtained.Improved Proposition 2.4. To appear in Journal of AlgebraCommutative AlgebraAlgebraic TopologyRings and Algebras13D10; 55N22text