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Polynomial decay rate of C0 semigroup in Hilbert spaces
Applicable Analysis ( IF 1.1 ) Pub Date : 2020-09-11 , DOI: 10.1080/00036811.2020.1817399
Yan-Fang Li 1 , Gen-Qi Xu 2
Affiliation  

In the paper, we characterize the polynomial stability of C0 semigroup T(t) with generator A on Hilbert space H. Let A have compact resolvent and there be a sequence of the eigenvectors of A that forms a Riesz basis for H. By the asymptotic relation of the real part and imaginary part of eigenvalues of A, we give the optimal decay rate of polynomial stability of T(t). Moreover, we give the zeros distribution of certain equations. As an application, we illustrate our general results by an acoustical system.



中文翻译:

希尔伯特空间中C0半群的多项式衰减率

在本文中,我们描述了多项式稳定性C0半群()希尔伯特空间上的生成器AH. 设A有紧分解子,并且A的特征向量序列构成 Riesz 基H. 通过A的特征值的实部和虚部的渐近关系,我们给出了多项式稳定性的最优衰减率(). 此外,我们给出了某些方程的零点分布。作为一个应用程序,我们通过声学系统来说明我们的一般结果。

更新日期:2020-09-11
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