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Aug 27, 2018 at 17:02 vote accept Bas Winkelman
Aug 27, 2018 at 16:37 answer added Konstantinos Kanakoglou timeline score: 4
Jul 27, 2018 at 7:10 answer added Nicola Ciccoli timeline score: 5
Apr 10, 2018 at 15:40 comment added Jan Grabowski I agree it's a reasonable question, for sure. Sorry I couldn't add more than \epsilon in terms of an actual answer...
Apr 10, 2018 at 15:36 comment added Bas Winkelman Yes, I am aware of coideal subalgebras, but was simply curious as to how badly the process of q-deforming Hopf subalgebras fails.
Apr 10, 2018 at 14:46 comment added Jan Grabowski If you've not done so already, you might also like to look into coideal subalgebras - this is arguably a better notion in this context than Hopf subalgebra.
Apr 10, 2018 at 14:43 comment added Jan Grabowski I think there are more simple but "uninteresting" examples than you suggest: how about the Hopf subalgebra generated by $K_1^2$, for example?
Apr 10, 2018 at 14:00 history asked Bas Winkelman CC BY-SA 3.0