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arXiv 0812.5068math.APmath-phmath.MP
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非特征粘性边界层的渐近稳定性

On asymptotic stability of noncharacteristic viscous boundary layers

Toan Nguyen

摘要:

我们扩展了我们最近的工作与K。一类可对称化双曲抛物方程组多维非特征粘性边界层的长时间稳定性。我们的主要改进是(i)建立一个更大的类系统的尺寸$d\ge 2$的稳定性,产生的结果,某些磁流体力学(MHD)层;(ii)下降的技术假设上的所谓的掠射集,这是在以前的工作中所需要的。我们还提供了一个不同的证明低频估计采用的方法Kreiss' symmetrizers,取代依赖于详细推导逐点界限的预解核。

英文摘要:

We extend our recent work with K. Zumbrun on long-time stability of multi-dimensional noncharacteristic viscous boundary layers of a class of symmetrizable hyperbolic-parabolic systems. Our main improvements are (i) to establish the stability for a larger class of systems in dimensions $d\ge 2$, yielding the result for certain magnetohydrodynamics (MHD) layers; (ii) to drop a technical assumption on the so--called glancing set which was required in previous works. We also provide a different proof of low-frequency estimates by employing the method of Kreiss' symmetrizers, replacing the one relying on detailed derivation of pointwise bounds on the resolvent kernel.

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