We apply this to reduced ideal sheaves and to the Grauert-Riemenschneider canonical sheaf of holomorphic n-forms.doi:10.5802/aif.3080Jean RuppenthalMartin SeraEprint ArxivRuppenthal, J., Sera, M.: Modifications of torsion-free coherent analytic sheaves. arXiv:1308.3973 (2014, preprint)...
(3) For any coherent sheaf F on E such that End(F) = k there exists a point x ∈ E and Φ∈ Aut(D b (Coh(E))) such that F ∼ =Φ(k(x)). This theoremshows a fundamental difference between a nodal and a cuspidal Weierstraß curve. Namely, let E be a singular Weie...
A coherent sheaf on Y is called torsion free if it does not have any non zero subsheaf with finite support. We prove that torsion free sheaves are reflexive. We study then the quasi locally free sheaves, i.e., sheaves which are locally isomorphic to direct sums of the OCi.We define ...
or p- divisible gr oup G over S is a sheaf of ab elian groups on the f ppf -site of S whic h is p-divisible, p-p o w er torsion, and suc h that G[p] is represen table b y a �nite lo cally free group sc heme o v er S . The basic example is the p 1 -torsion...
Subsheaves of a hermitian torsion free coherent sheaf on an arithmetic varietydoi:10.1215/KJM/1250280973Atsushi MoriwakiKyoto UniversityJournal of Mathematics of Kyoto University
A local ampleness criterion of torsion free sheavesHIGHER DIRECT IMAGESKAHLER MORPHISMSVECTOR-BUNDLESHODGE METRICSCURVATUREWe give an ampleness criterion of a torsion free coherent sheaf at a given point in terms of a curvature positivity of a singular Hermitian metric. (C) 2013 Elsevier Masson ...
Recall that if E is a p-stable rank 2 vector bundle on p3 with clE= 0 then c2E > 0 [H], and that any rank 2 semistable torsion free sheaf E on pa with Chern classes (0,1,0) is limit of p-stable rankdoi:10.1007/BF03026539Rosa M. Migo-Roig...
2015-02-18上传 partial connection for $p$-torsion line bundles in characteristic $p0$ 文档格式: .pdf 文档大小: 132.62K 文档页数: 6页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: 论文--大学论文 文档标签: partialconnectionforp-torsionlinebundlesincharacteristicp0 ...