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Nov 27, 2018 at 20:52 vote accept CommunityBot moved from User.Id=14319 by developer User.Id=322028
Nov 27, 2018 at 19:46 answer added Hannes timeline score: 1
Nov 27, 2018 at 17:08 comment added user14319 @Hannes: Thanks for your comment! Indeed in Agmon's notes, he assumes that the domain has "nice" boundary. I overlooked this. I would accept your comment as an answer.
Nov 27, 2018 at 16:15 comment added Hannes There is probably a regularity assumption on $\Omega$ in the lecture notes, right? Zero traces are very convenient because then $\Omega$ may be very irregular and one may rely on results for the full space $\mathbb{R}^n$ by considering the zero extension in the proofs. If one wants the result thus obtained also for non-zero trace functions, one usually needs some boundary regularity for $\partial\Omega$ to have suitable extensions to the full space at hand, but then the proofs work very similarly. I would expect something like that here.
Nov 27, 2018 at 15:55 history asked user14319 CC BY-SA 4.0