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Feb 21, 2017 at 22:20 comment added Alex Dugas Yes, the trivial extensions of this type of Nakayama algebra are an interesting class of examples. They tend to be periodic, but the periods of the simples are somewhat irregular.
Feb 21, 2017 at 22:07 comment added Mare sorry, I think I did not wait long enough. It might be that the syzygies grow very slowly and I didnt wait long enough. So I think the dimensions are not bounded (but it really looked like that calculating syzygies till 100).
Feb 21, 2017 at 21:26 comment added Mare Taking the Nakayama (quiver) algebra with kupisch series ([3,3,3,3,3,3,3,2,1] and then its trivial extension, my Pc suggests it has a simple module with bounded Omegas but which is not periodic. It is over a finite field with characteristic 3, but I think that it does not matter what the field is for that example, since the relations are field independent.
Feb 21, 2017 at 21:23 comment added Mare Oh, right I knew that with the complexity once but forget about it...
Feb 21, 2017 at 20:56 history answered Alex Dugas CC BY-SA 3.0