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arXiv 1209.5885math.DS
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不定常空间上过程的吸引子。应用于wave equations

Attractors for processes on time-dependent spaces. Applications to wave equations

Monica Conti, Vittorino Pata, Roger Temam

摘要:

对于作用在单参数赋范空间族上的过程U(t,s),仅基于拉回吸引性质的极小性,提出了一个不定常吸引子的概念.这样的吸引子被证明是不变的,只要过程是T-闭的,对于某个T>0,这是一个比连续性(在文本中定义)弱得多的性质。作为副产品,我们推广了[10]中发展的不定常空间中的吸引子理论。最后,我们利用新的框架来研究具有不定常传播速度的波动方程的长期行为。

英文摘要:

For a process U(t,s) acting on a one-parameter family of normed spaces, we present a notion of time-dependent attractor based only on the minimality with respect to the pullback attraction property. Such an attractor is shown to be invariant whenever the process is T-closed for some T>0, a much weaker property than continuity (defined in the text). As a byproduct, we generalize the recent theory of attractors in time-dependent spaces developed in [10]. Finally, we exploit the new framework to study the longterm behavior of wave equations with time-dependent speed of propagation.

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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