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arXiv 1601.05552math.AP
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一个具有非局部相互作用的Logistic方程

A logistic equation with nonlocal interactions

Luis Caffarelli, Serena Dipierro, Enrico Valdinoci

摘要:

在这里,我们认为一个逻辑方程,建模过程的非本地字符的扩散和增殖条款。更准确地说,对于根据Lévy过程传播并且可以到达其位置附近的资源的种群,我们比较(并找到明确的生存阈值)本地和非本地情况。作为环境空间,我们可以考虑:有界域、周期环境和过渡问题,其中环境由无限小扩散块和相邻的非局部扩散块组成。在每一种情况下,我们分析的存在/不存在的解决方案的频谱属性的域。特别是,我们给出了一个详细的描述,即非本地人口可能更好地适应稀疏的资源和小环境的事实。

英文摘要:

We consider here a logistic equation, modeling processes of nonlocal character both in the diffusion and proliferation terms. More precisely, for populations that propagate according to a Lévy process and can reach resources in a neighborhood of their position, we compare (and find explicit threshold for survival) the local and nonlocal case. As ambient space, we can consider: bounded domains, periodic environments, and transition problems, where the environment consists of a block of infinitesimal diffusion and an adjacent nonlocal one. In each of these cases, we analyze the existence/nonexistence of solutions in terms of the spectral properties of the domain. In particular, we give a detailed description of the fact that nonlocal populations may better adapt to sparse resources and small environments.

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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