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Apr 22, 2013 at 3:56 history edited Youngsu CC BY-SA 3.0
Removed part pointed out by Hailong
Apr 22, 2013 at 3:51 comment added Youngsu Yes, you are absolutely right. I meant to say Cohen-Macaulay type. Let me edit this.
Apr 22, 2013 at 3:27 comment added Hailong Dao Youngsu, if depth M is $>0$ then the socle is $0$.
Apr 22, 2013 at 2:50 history answered Youngsu CC BY-SA 3.0