Laurent coefficients and Ext of finite graded modules

Mathematische Annalen - Tập 307 - Trang 401-415 - 1997
Luchezar L. Avramov1, Ragnar-Olaf Buchweitz2, Judith D. Sally3
1Department of Mathematics, Purdue University, West Lafayette, IN 47907-1395, USA (e-mail: [email protected]), , US
2Department of Mathematics, University of Toronto, Ontario, Canada M5S 1A1 (e-mail: [email protected]), , CA
3Department of Mathematics, Northwestern University, Evanston, IL 60208, USA (e-mail: [email protected]), , US