Degenerate constants in degree inequalities for Sobolev circle maps: on some problems posed by Brezis

Fuente: arXiv
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Main Authors: Dou, Xu'an, Jin, Zeyu
Format: Preprint
Published: 2026
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author Dou, Xu'an
Jin, Zeyu
author_facet Dou, Xu'an
Jin, Zeyu
contents We sharpen the constants in two degree inequalities for circle-valued Sobolev maps in degenerate regimes, as $p \to 1^+$ or $δ\to 0^+$. The two proofs use the same power trick together with elementary estimates. The results answer two open problems posed by Brezis. The proofs are obtained by generative AI and are verified by the authors.
format Preprint
id arxiv_https___arxiv_org_abs_2605_24626
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Degenerate constants in degree inequalities for Sobolev circle maps: on some problems posed by Brezis
Dou, Xu'an
Jin, Zeyu
Functional Analysis
Classical Analysis and ODEs
We sharpen the constants in two degree inequalities for circle-valued Sobolev maps in degenerate regimes, as $p \to 1^+$ or $δ\to 0^+$. The two proofs use the same power trick together with elementary estimates. The results answer two open problems posed by Brezis. The proofs are obtained by generative AI and are verified by the authors.
title Degenerate constants in degree inequalities for Sobolev circle maps: on some problems posed by Brezis
topic Functional Analysis
Classical Analysis and ODEs
url https://arxiv.org/abs/2605.24626