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Published April 2018 | Submitted
Journal Article Open

Minimizers for the fractional Sobolev inequality on domains

Abstract

We consider a version of the fractional Sobolev inequality in domains and study whether the best constant in this inequality is attained. For the half-space and a large class of bounded domains we show that a minimizer exists, which is in contrast to the classical Sobolev inequalities in domains.

Additional Information

© 2018 Springer-Verlag GmbH Germany, part of Springer Nature. Received: 20 August 2017; Accepted: 25 January 2018; First Online: 17 February 2018. Part of this work was done when T. J. was visiting California Institute of Technology as an Orr foundation Caltech-HKUST Visiting Scholar during 2015-2016. He would like to thank Professor Thomas Y. Hou for hosting his visit. He also thanks Professors Zhen-Qing Chen and Dong Li for useful discussions. Partial support through National Science Foundation, grant DMS-1363432 (R.L.F.), Hong Kong RGC grant ECS 26300716 (T.J.) and NSFC 11501034, a key project of NSFC 11631002 and NSFC 11571019, (J.X.) is acknowledged.

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Created:
August 19, 2023
Modified:
October 18, 2023