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arXiv 1102.3661math.AP
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L^1空间中碎裂方程自相似性的收敛速率

Rate of convergence to self-similarity for the fragmentation equation in L^1 spaces

María J. Cáceres, José A. Cañizo, Stéphane Mischler

摘要:

在文献[1]中,作者证明了自相似碎裂方程的解以指数速度收敛到平衡点.这是通过显示定义时间演化的算子的加权$L^2$空间中的谱间隙来完成的。在目前的工作中,我们证明了加权$L^1$空间也有一个谱间隙,从而扩展指数收敛到一个更大的初始条件。主要工具是文献[4]中的推广结果。

英文摘要:

In a recent result by the authors (ref. [1]) it was proved that solutions of the self-similar fragmentation equation converge to equilibrium exponentially fast. This was done by showing a spectral gap in weighted $L^2$ spaces of the operator defining the time evolution. In the present work we prove that there is also a spectral gap in weighted $L^1$ spaces, thus extending exponential convergence to a larger set of initial conditions. The main tool is an extension result in ref. [4].

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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