2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/99870We show that certain categories of perverse sheaves on a pair of affine toric varieties defined by dual cones are Koszul dual in the sense of Beilinson, Ginzburg and Soergel. The functor expressing this duality is constructed explicitly using a combinatorial model for mixed sheaves on toric varieties.33 pages; AMS-LaTeX. Revised introduction; other minor corrections. Final version; to appear in Transactions of the AMSAlgebraic Geometry14M25 (primary) 16S37, 55N33, 18F20 (secondary)text