Remark on isolated removable singularities of harmonic maps in two dimensions

For a ball \(B_R(0)\subset\mathbb{R}^2\), we provide sufficient conditions such that a harmonic map \(u\in C^\infty(B_R(0)\setminus\{0\}, N)\), with a self-similar bound on its gradient,  belong to \(C^\infty(B_R(0))\). These conditions also guarantee the triviality of such harmonic maps when \(R=\i...

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Published inElectronic journal of differential equations Vol. 2025; no. 1-??; pp. 85 - 5
Main Author Wang, Changyou
Format Journal Article
LanguageEnglish
Published Texas State University 11.08.2025
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ISSN1072-6691
1072-6691
DOI10.58997/ejde.2025.85

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Abstract For a ball \(B_R(0)\subset\mathbb{R}^2\), we provide sufficient conditions such that a harmonic map \(u\in C^\infty(B_R(0)\setminus\{0\}, N)\), with a self-similar bound on its gradient,  belong to \(C^\infty(B_R(0))\). These conditions also guarantee the triviality of such harmonic maps when \(R=\infty\). For more information see https://ejde.math.txstate.edu/Volumes/2025/85/abstr.html
AbstractList For a ball \(B_R(0)\subset\mathbb{R}^2\), we provide sufficient conditions such that a harmonic map \(u\in C^\infty(B_R(0)\setminus\{0\}, N)\), with a self-similar bound on its gradient,  belong to \(C^\infty(B_R(0))\). These conditions also guarantee the triviality of such harmonic maps when \(R=\infty\). For more information see https://ejde.math.txstate.edu/Volumes/2025/85/abstr.html
For a ball $B_R(0)\subset\mathbb{R}^2$, we provide sufficient conditions such that a harmonic map $u\in C^\infty(B_R(0)\setminus\{0\}, N)$, with a self-similar bound on its gradient, belong to $C^\infty(B_R(0))$. These conditions also guarantee the triviality of such harmonic maps when $R=\infty$.
Author Wang, Changyou
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Snippet For a ball \(B_R(0)\subset\mathbb{R}^2\), we provide sufficient conditions such that a harmonic map \(u\in C^\infty(B_R(0)\setminus\{0\}, N)\), with a...
For a ball $B_R(0)\subset\mathbb{R}^2$, we provide sufficient conditions such that a harmonic map $u\in C^\infty(B_R(0)\setminus\{0\}, N)$, with a self-similar...
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StartPage 85
SubjectTerms harmonic maps
removable isolated singularity
Title Remark on isolated removable singularities of harmonic maps in two dimensions
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