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Topologically mixing hypercyclic operators
Authors:George Costakis   Martí  n Sambarino
Affiliation:Department of Mathematics, University of Maryland, College Park, Maryland 20742 ; Department of Mathematics, University of Maryland, College Park, Maryland 20742
Abstract:Let $X$ be a separable Fréchet space. We prove that a linear operator $T:Xto X$ satisfying a special case of the Hypercyclicity Criterion is topologically mixing, i.e. for any given open sets $U,V$ there exists a positive integer $N$ such that $T^n(U)cap Vneq emptyset$ for any $nge N.$ We also characterize those weighted backward shift operators that are topologically mixing.

Keywords:Hypercyclic operators   hypercyclicity criterion   topologically mixing
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