2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/66684In this paper, we estimate the Hilbert-Kunz multiplicity of the (extended) Rees algebras in terms of some invariants of the base ring. Also, we give an explicit formula for the Hilbert-Kunz multiplicities of Rees algebras over Veronese subrings.Commutative Algebra13H15; 13A30; 13H35text