Timeline for Finite add(N)-resolution

11 events

when toggle format	what		by	license	comment
Apr 13, 2017 at 12:58	history	edited	CommunityBot		replaced http://mathoverflow.net/ with https://mathoverflow.net/
Dec 24, 2016 at 9:04	comment	added	Jeremy Rickard		@Mare I've included a more sensible proof in my answer.
Dec 24, 2016 at 9:03	history	edited	Jeremy Rickard	CC BY-SA 3.0	added 465 characters in body
Dec 23, 2016 at 16:28	comment	added	Jeremy Rickard		@Mare Probably the proof I gave makes it look weirder than it really is: I was replying to your comment in a hurry, so was content with any proof that worked. The picture in my head, though, is that $F(M)$ is a module for $E=\text{End}(M)$ and that $F(\alpha)$ maps into the radical (as an $E$-module) of $F(M^n)$. If you fill in the gaps in that argument, I think you'll get something less weird.
Dec 23, 2016 at 10:39	vote	accept	Mare
Dec 23, 2016 at 10:39	vote	accept	Mare
Dec 23, 2016 at 10:39
Dec 23, 2016 at 10:38	comment	added	Mare		Thanks, thats some weird looking argument. That generalises a result I have found. Ill write you an email about that.
Dec 23, 2016 at 10:32	history	edited	Jeremy Rickard	CC BY-SA 3.0	Added explanation
Dec 23, 2016 at 10:16	comment	added	Jeremy Rickard		@Mare That part is nothing specific to $\text{Ext}^1$. I'll add more explanation.
Dec 22, 2016 at 19:41	comment	added	Mare		thanks, can you explain the last step a little more? What is the conenction between Ext^1 and the radical there?
Dec 22, 2016 at 17:58	history	answered	Jeremy Rickard	CC BY-SA 3.0