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arXiv 2012.03821math.DSmath.AP
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巴拿赫空间中渐近紧上圈的惯性流形和叶理

Inertial manifolds and foliations for asymptotically compact cocycles in Banach spaces

Mikhail Anikushin

摘要:

研究了巴拿赫空间中由抽象上循环给出的渐近紧非自治动力系统。我们的主要假设是由二次锥场的压缩性质(由一族不定二次类李雅普诺夫泛函给出)和渐近紧性给出的。在这样的条件下,就有可能像在正规双曲流形理论中那样重建叶理。我们的方法可以统一许多“实用”理论的本地和非本地的不变流形,如稳定/不稳定/中心流形和惯性流形,而且,它往往会导致其存在的最佳条件。给出了半线性抛物型方程和中立型时滞方程的应用,其中频率定理用于构造常数锥场。

英文摘要:

We study asymptotically compact nonautonomous dynamical systems given by abstract cocycles in Banach spaces. Our main assumptions are given by a squeezing property in a quadratic cone field (given by a family of indefinite quadratic Lyapunov-like functionals) and asymptotic compactness. Under such conditions it is possible to reconstruct foliations as in the theory of normally hyperbolic manifolds. Our approach allows to unify many "practical" theories of local and nonlocal invariant manifolds, such as stable/unstable/center manifolds and inertial manifolds, and, moreover, it often leads to optimal conditions for their existence. We give applications for semilinear parabolic equations and neutral delay equations, where the Frequency Theorem is used to construct constant cone fields.

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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