2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/57067Some cohomology classes associated with an ideal in a Lie algebra, a Poisson structure on the basic functions algebra of contact structure, its Poisson cohomology and geometric (pre)quantization are considered from the algebraic point of view.31 pages. Some misprints and inaccuracies in definitions are correctedMathematical PhysicsSymplectic Geometry53D17; 58B34; 53D35The Characteristic Class of a Lie Algebra Ideal, Contact Structures and the Poisson Algebra of Basic Functionstext