Abstract
In this paper we present a detailed study of critical embeddings of weighted Sobolev spaces into weighted Orlicz spaces of exponential type for weights of monomial type. More precisely, we give an alternative proof of a recent result by N. Lam [NoDEA 24(4), 2017] showing the optimality of the constant in the Trudinger–Moser inequality. We prove a Poincaré inequality for this class of weights. We show that the critical embedding is optimal within the class of Orlicz target spaces. Moreover, we prove that it is not compact, and derive a corresponding version of P.-L. Lions’ principle of concentrated compactness.
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Communicated by A. Malchiodi.
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The research of the first author was supported by grant No. P201-18-00580S of the Czech Science Foundation, and the second author’s research was supported by the Discovery Project grant DP200101065 of the Australian Research Council.
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Gurka, P., Hauer, D. More insights into the Trudinger–Moser inequality with monomial weight. Calc. Var. 60, 16 (2021). https://doi.org/10.1007/s00526-020-01890-7
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DOI: https://doi.org/10.1007/s00526-020-01890-7