A SHORT PROOF OF A RESULT OF NAGEL

Let (R;m) be a Gorenstein local ring, and M and N be two nitely-generated modules over R. Nagel proved that if M and N are in the same even liaison class, then one has Him(M) = Him (N) for all i < dimM = dimN. In this paper, we provide a short proof to this result.

کلیدواژه ها:

Linkage ، Local cohomology ، Quasi-Gorenstein module