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A note on strong-form stability for the Sobolev inequality

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 نشر من قبل Robin Neumayer
 تاريخ النشر 2019
  مجال البحث
والبحث باللغة English
 تأليف Robin Neumayer




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In this note, we establish a strong form of the quantitive Sobolev inequality in Euclidean space for $p in (1,n)$. Given any function $u in dot W^{1,p}(mathbb{R}^n)$, the gap in the Sobolev inequality controls $| abla u - abla v|_{p}$, where $v$ is an extremal function for the Sobolev inequality.

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