多种群交叉扩散系统的熵结构与对偶性
Entropic structure and duality for multiple species cross-diffusion systems
摘要:
研究了一类多种群交叉扩散系统整体弱解的存在性。存在性是基于两个不同的成分:熵估计给出某种梯度控制,对偶估计自然给出L^2控制。证明依赖于一个半隐格式的交叉扩散系统首先定义的两个作者和合作者。这些结果被应用到模型的熵依赖于最近展出的陈等详细的平衡条件。al.
英文摘要:
This paper deals with the existence of global weak solutions for a wide class of (multiple species) cross-diffusions systems. The existence is based on two different ingredients: an entropy estimate giving some gradient control and a duality estimate that gives naturally L^2 control. The proof relies on a semi-implicit scheme tailored for cross-diffusion systems firstly defined by the two authors and collaborators. These results are applied to models having an entropy relying on the detailed balance condition recently exhibited by Chen et. al.
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