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Quantitative profile decomposition and stability for a nonlocal Sobolev inequality

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Autor(es):
Piccione, Paolo ; Yang, Minbo ; Zhao, Shunneng
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: Journal of Differential Equations; v. 417, p. 41-pg., 2025-02-05.
Resumo

In this paper, we focus on studying the quantitative stability of the nonlocal Sobolev inequality given by S-HL(integral(N)(R) (|x|-(mu) * |mu|(2*)(mu) |mu|(2*)(mu) dx)1/(2*)(mu) <= integral(N)(R) | del u|(2) dx, for all u is an element of D-1,D-2(R-N) , where * denotes the convolution of functions, 2 * (mu) := 2 N-mu/ N- 2 and S HL are positive constants that depends solely on N and mu . For N> 3 and 0 < mu < N , it is well-known that, up to translation and scaling, the nonlocal Sobolev inequality possesses a unique extremal function W[ xi,lambda] that is positive and radially symmetric. Our research consists of three main parts. Firstly, we prove a result that provides quantitative stability of the nonlocal Sobolev inequality with the level of gradients. Secondly, we establish the stability of profile decomposition in relation to the Euler-Lagrange equation of the aforementioned inequality for nonnegative functions. Lastly, we investigate the quantitative stability of the nonlocal Sobolev inequality in the following form: parallel to del u-(kappa)Sigma(i=1)del W[xi i,lambda i]parallel to parallel to parallel to(2)(L)<= C parallel to parallel to parallel to Delta u+(1|x|(mu)*|u|(2*)(mu))|u|(2*;)(mu)-(2)(u)parallel to parallel to parallel to(1,2)((D)(R-N))(-1), where the parameter region satisfies kappa >= 2, 3 <= N < 6 - mu , mu is an element of ( 0 , N) with 0 < mu <= 4, or in the case of dimension N >= 3 and kappa = 1, mu is an element of ( 0 , N) with 0 < mu <= 4. (c) 2024 Elsevier Inc. All rights are reserved, including those for text and data mining, AI training, and similar technologies. (AU)

Processo FAPESP: 22/16097-2 - Métodos modernos em geometria diferencial e análise geométrica
Beneficiário:Paolo Piccione
Modalidade de apoio: Auxílio à Pesquisa - Temático