Abstract
This article shows some instances where properties of a local ring are closely connected with the homological properties of a single module.
ACKNOWLEDGMENTS
The authors would like to thank the referee for his/her useful comments. A. Tehranian and M. Tousi were supported by a grant from Islamic Azad University (IAU). S. Yassemi was supported by a grant from IPM No. 85130214.
Notes
Communicated by J. Kuzmanovich.