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arXiv 1409.2630math.FA
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线性算子的J-类序列

J-class sequences of linear operators

M. R. Azimi

摘要:

本文首先在可分巴拿赫空间$X$上引入有界线性算子列$\{T_n\}_{n=1}^{\infty}$的扩张极限集$J_{\{T^n\}}(x)$。然后利用广义极限集研究了线性算子序列的动力学。证明了广义极限集与线性算子序列的拓扑传递性强相关。最后证明了算子序列$\{T_n\}_{n=1}^{\infty}\subseteq \mathcal{B}(X)$是超循环的当且仅当存在循环向量$x\in X$使得$J_{\{T^n\}}(x)=X$ .

英文摘要:

In this paper we first introduce the extended limit set $J_{\{T^n\}}(x)$ for a sequence of bounded linear operators $\{T_n\}_{n=1}^{\infty}$ on a separable Banach space $X$ . Then we study the dynamics of sequence of linear operators by using the extended limit set. It is shown that the extended limit set is strongly related to the topologically transitive of a sequence of linear operators. Finally we show that a sequence of operators $\{T_n\}_{n=1}^{\infty}\subseteq \mathcal{B}(X)$ is hypercyclic if and only if there exists a cyclic vector $x\in X$ such that $J_{\{T^n\}}(x)=X$.

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