D-modules over rings with finite F-representation type
Takagi, Shunsuke ; Takahashi, Ryo
arXiv, 0706.3842 / Harvested from arXiv
Smith and Van den Bergh introduced the notion of finite F-representation type as a characteristic $p$ analogue of the notion of finite representation type. In this paper, we prove two finiteness properties of rings with finite F-representation type. The first property states that if $R=\bigoplus_{n \ge 0}R_n$ is a Noetherian graded ring with finite (graded) F-representation type, then for every non-zerodivisor $x \in R$, $R_x$ is generated by $1/x$ as a $D_{R}$-module. The second one states that if $R$ is a Gorenstein ring with finite F-representation type, then $H_I^n(R)$ has only finitely many associated primes for any ideal $I$ of $R$ and any integer $n$. We also include a result on the discreteness of F-jumping exponents of ideals of rings with finite (graded) F-representation type as an appendix.
Publié le : 2007-06-26
Classification:  Mathematics - Commutative Algebra,  Mathematics - Algebraic Geometry,  13A35 (Primary) 13N10, 13D45 (Secondary)
@article{0706.3842,
     author = {Takagi, Shunsuke and Takahashi, Ryo},
     title = {D-modules over rings with finite F-representation type},
     journal = {arXiv},
     volume = {2007},
     number = {0},
     year = {2007},
     language = {en},
     url = {http://dml.mathdoc.fr/item/0706.3842}
}
Takagi, Shunsuke; Takahashi, Ryo. D-modules over rings with finite F-representation type. arXiv, Tome 2007 (2007) no. 0, . http://gdmltest.u-ga.fr/item/0706.3842/