Topological models for emergent dynamics with short-range interactions

Topological models for emergent dynamics with short-range interactions
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具有短程相互作用的突发动态的拓扑模型

DOI:
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发表时间:
2018
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影响因子:
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通讯作者:
E. Tadmor
E. Tadmor
中科院分区:
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文献类型:
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作者:
R. Shvydkoy;E. Tadmor

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我们介绍了一类新的涌现动力学模型。它是基于一个新的通信协议,其中包括两个主要特点:短程内核,限制通信的局部几何球,和各向异性的通信内核,适应这些球的局部密度,形成${拓扑\邻域}$。我们证明了群集行为-经常出现的全球对齐,非空的解决方案,这样的模型。的(全球)正则性,因此无条件群集的一维模型证明通过应用的De Giorgi型方法。为了处理用于几何和拓扑通信的奇异内核,我们开发了一个新的分析${本地}$分数椭圆算子,有趣的是,为了自己的缘故,在我们的类模型的建设中遇到的。
We introduce a new class of models for emergent dynamics. It is based on a new communication protocol which incorporates two main features: short-range kernels which restrict the communication to local geometric balls, and anisotropic communication kernels, adapted to the local density in these balls, which form ${topological \ neighborhoods}$. We prove flocking behavior --- the emergence of global alignment for regular, non-vacuous solutions of such models. The (global) regularity and hence unconditional flocking of the one-dimensional model is proved via an application of a De Giorgi-type method. To handle the singular kernels used for geometric and topological communication, we develop a new analysis for ${local}$ fractional elliptic operators, interesting for its own sake, encountered in the construction of our class of models.
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影响因子: 4.7
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