Degenerations of graded Cohen-Macaulay modules

Naoya Hiramatsu

We introduce a notion of degenerations of graded modules. In relation to it, we also introduce several partial orders as graded analogies of the hom order, the degeneration order and the extension order. We prove that these orders are identical on the graded Cohen-Macaulay modules over a graded ring which is of graded finite representation type and representation directed.

Journal of Commutative Algebra

Rocky Mountain Mathematics Consortium

7

2

221

239

10.1216/JCA-2015-7-2-221

https://doi.org/10.1216/JCA-2015-7-2-221
https://jglobal.jst.go.jp/detail?JGLOBAL_ID=201702203434965775