Toric vector bundles on Bott tower

摘要

In this paper, using Klyachko's classification theorem we study positivity and semi-stability of toric vector bundles on a class of nonsingular projective toric varieties, known as Bott towers. In particular, we give a criterion of s-jet ampleness of line bundles and characterize nef and big line bundles on Bott towers using Bott numbers. We obtain a criterion for the ampleness of discriminant zero semi-stable toric vector bundles on nonsingular projective toric varieties. We also describe toric subbundles of toric vector bundles on nonsingular toric varieties. (C) 2019 Elsevier Masson SAS. All rights reserved.