ABSTRACT
The purpose of this article is to give criteria for the Gorenstein property of the blowup of the spectrum of a Gorenstein local ring A along an ideal I⊂A by means of the coefficient ideal of I. Moreover, we investigate the conductor ideal and the Gorenstein property of the fiber cone.
Mathematics Subject Classification:
This research has been supported by the Academy of Finland, project 48556.
Communicated by S. Goto.