Abstract
In this paper we provide a proof of the Sobolev–Poincaré inequality for variable exponent spaces by means of mass transportation methods, in the spirit of Cordero-Erausquin et al. (Adv Math 182(2):307–332, 2004). The importance of this approach is that the method is flexible enough to deal with different inequalities. As an application, we also deduce the Sobolev-trace inequality improving the result of Fan (J Math Anal Appl 339(2):1395–1412, 2008) by obtaining an explicit dependence of the exponent in the constant.
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Borthagaray, J.P., Fernández Bonder, J. & Silva, A. A mass transportation approach for Sobolev inequalities in variable exponent spaces. manuscripta math. 151, 133–146 (2016). https://doi.org/10.1007/s00229-016-0830-6
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DOI: https://doi.org/10.1007/s00229-016-0830-6