2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65420Formulas are obtained in terms of complete reductions for the bigraded components of local cohomology modules of bigraded Rees algebras of 0-dimensional ideals in 2-dimensional Cohen-Macaulay local rings. As a consequence, cohomological expressions for the coefficients of the Bhattacharya polynomial of such ideals are obtained.11 pages. To appear in "Advances in Algebra and Geometry", Proceedings of Hyderabad Conference 2001Commutative AlgebraPrimary 13H10, 13H15, Secondary 13D40, 13D45text