论文标题

循环和超循环操作员之间的关系

Relationships between Cyclic and Hypercyclic Operators

论文作者

Augusto, André, Pellegrini, Leonardo

论文摘要

如果存在x $中的vector $ x \,则banach space $ x $上有界的线性运算符$ t $称为hypercyclic,这样$ orb {(x,x,t)} $在$ x $中是密集的。超环境标准是众所周知的足够条件,使操作员具有超环状。一个开放的问题是是否存在超循环标准也是必要条件的空间。出于多种原因,带有非常竞争的操作员的空间是一些自然候选人,这是对该问题的积极答案。在本文中,我们提供了一个定理,该定理为这些空间中的运营商建立了一些关系。

A bounded linear operator $T$ on a Banach space $X$ is called hypercyclic if there exists a vector $x \in X$ such that $orb{(x,T)}$ is dense in $X$. The Hypercyclicity Criterion is a well-known sufficient condition for an operator to be hypercyclic. One open problem is whether there exists a space where the Hypercyclicity Criterion is also a necessary condition. For a number of reasons, the spaces with very-few operators are some natural candidates to be a positive answer to that problem. In this paper, we provide a theorem that establishes some relationships for operators in these spaces.

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