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arXiv 1407.7121math.APmath.CA
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变号非线性的打靶法

Shooting Method with Sign-Changing Nonlinearity

Ze Cheng, Congming Li

摘要:

本文研究了一类非线性系统\begin{align} \left\{\begin{array}{cl} -Δu_{i} = f_{i}(u) & \text{in } \mathbb{R}^n, u_{i} > 0 & \text{in } \mathbb{R}^n, \, i = 1, 2,\cdots, L % u_{i}(x) \rightarrow 0 & \text{uniformly as } |x| \rightarrow \infty \end{array} \right. \end{align}的变号非线性项$f_i$的解的存在性。最近,度理论方法打靶法为这一广泛的一类问题中引入了非负$f_i$的\cite{LiarXiv13}。然而,许多非线性薛定谔类型的系统涉及与未定符号的相互作用。在这里,基于一些新的动态估计,我们能够扩展的度理论方法的系统与符号变化的源项。

英文摘要:

In this paper, we study the existence of solution to a nonlinear system: \begin{align} \left\{\begin{array}{cl} -Δu_{i} = f_{i}(u) & \text{in } \mathbb{R}^n, u_{i} > 0 & \text{in } \mathbb{R}^n, \, i = 1, 2,\cdots, L % u_{i}(x) \rightarrow 0 & \text{uniformly as } |x| \rightarrow \infty \end{array} \right. \end{align} for sign changing nonlinearities $f_i$'s. Recently, a degree theory approach to shooting method for this broad class of problems is introduced in \cite{LiarXiv13} for nonnegative $f_i$'s. However, many systems of nonlinear Schödinger type involve interaction with undetermined sign. Here, based on some new dynamic estimates, we are able to extend the degree theory approach to systems with sign-changing source terms.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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