Details:
Title  Rees algebras of diagonal ideals.  Author(s)  KueiNuan Lin  Type  Article in Journal  Abstract 
There is a natural epimorphism from the symmetric algebra to the Rees algebra of an ideal. When this epimorphism is an isomorphism, we say that the ideal is of linear type. Given two determinantal rings over a field, we consider the diagonal ideal, kernel of the multiplication map. We prove in many cases that the diagonal ideal is of linear type and recover the defining ideal of the Rees algebra. In our cases, the special fiber rings of the diagonal ideals are the homogeneous coordinate rings of the join varieties.
 ISSN  19392346 
URL 
http://projecteuclid.org/euclid.jca/1389621376 
Language  English  Journal  J. Commut. Algebra  Volume  5  Number  3  Pages  359398  Publisher  Rocky Mountain Mathematics Consortium c/o Arizona State University, Tempe, AZ  Year  2013  Edition  0  Translation 
No  Refereed 
No 
