VARIETIES WHICH ARE ALMOST D-AFFINE

Authors
Citation
Mp. Holland, VARIETIES WHICH ARE ALMOST D-AFFINE, Bulletin of the London Mathematical Society, 25, 1993, pp. 321-326
Citations number
14
Categorie Soggetti
Mathematics, General",Mathematics
ISSN journal
00246093
Volume
25
Year of publication
1993
Part
4
Pages
321 - 326
Database
ISI
SICI code
0024-6093(1993)25:<321:VWAAD>2.0.ZU;2-K
Abstract
This paper produces several examples of varieties H for which the glob al sections functor GAMMA(H, -): D(H)-mod --> D(H)-mod is exact, and m akes D(H)-mod a quotient category of D(H)-mod, but is not an equivalen ce. These varieties are quotients by finite group actions of D-affine varieties. The torsion of GAMMA(H, -) is also described, in some cases . Here, D(H)-mod denotes the category of quasi-coherent D(H)-modules.