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arXiv 2609.36360math.AP

具有全局相互作用的分数阶逻辑型椭圆问题:存在性、局部唯一性与分数阶到局部极限

A Fractional Logistic-Type Elliptic Problem with Global Interactions: Existence, Local Uniqueness, and the Fractional-to-Local Limit

  • Universidade Federal do Amazonas(亚马孙联邦大学)
  • Instituto CERTI Amazônia (ICA)(亚马孙CERTI研究所)

机构由 AI 辅助整理,请以论文原文为准。

Alireza Khatib, Somayeh Mousavinasr, Bashir Zeimarani

AI总结:

本文研究带全局相互作用的分数阶逻辑型椭圆问题,通过极小化与不动点定理证明解的存在性,并在特定条件下建立局部唯一性及分数阶到局部极限的收敛性。

AI中文摘要:

我们研究了一个在有界域上具有齐次外部条件以及线性和非线性积分相互作用的分数阶逻辑型椭圆问题。相互作用核可以是非对称且变号的,因此该问题不一定具有变分结构。在对称竞争情形下,强制性通过全局极小化给出弱解。对于相互作用参数的任意固定值,显式的小性条件使我们能够在不要求核的对称性或符号限制的情况下应用 Schauder 不动点定理。额外的符号假设给出非负解。当非线性指数满足 $q\geq2$ 时,一个压缩条件在不变球内给出唯一性以及 Picard 迭代的收敛性。最后,当分数阶趋近于 1 时,我们证明了子序列收敛到局部 Dirichlet 问题的一个解,以及分数阶能量收敛到 Dirichlet 能量。局部解在极限球内的唯一性给出了整个族的收敛性。

英文摘要:

We study a fractional logistic-type elliptic problem on a bounded domain with homogeneous exterior conditions and linear and nonlinear integral interactions. The interaction kernels may be nonsymmetric and sign-changing, so the problem need not admit a variational formulation. In the symmetric competitive regime, coercivity yields a weak solution by global minimization. For arbitrary fixed values of the interaction parameter, explicit smallness conditions allow us to apply Schauder's fixed-point theorem without symmetry or sign restrictions on the kernels. Additional sign assumptions give nonnegative solutions. When the nonlinear exponent satisfies $q\geq2$, a contraction condition yields uniqueness in an invariant ball and convergence of the Picard iteration. Finally, as the fractional order approaches one, we prove subsequential convergence to a solution of the local Dirichlet problem, together with convergence of the fractional energies to the Dirichlet energy. Uniqueness of the local solution in the limiting ball gives convergence of the entire family.

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