Hou, Bingzhe; Tian, Geng; Zhu, Sen Approximation of chaotic operators. (English) Zbl 1261.47016 J. Oper. Theory 67, No. 2, 469-493 (2012). In the present paper, Li-Yorke and distributionally chaotic linear operators on Hilbert spaces are studied. The closures and the interiors of the set of all Li-Yorke chaotic operators or all distributionally chaotic operators are discussed. The arcwise connectedness of these sets is proved. The authors also obtain the following relation between hypercyclic operators and distributionally chaotic operators: the set of all hypercyclic operators belongs to the closure of the set of all distributionally chaotic operators. The relation between norm-unimodal operators and distributionally chaotic operators is also obtained. Reviewer: Michael Perelmuter (Kyïv) Cited in 12 Documents MSC: 47A16 Cyclic vectors, hypercyclic and chaotic operators 54H20 Topological dynamics (MSC2010) 37B99 Topological dynamics Keywords:Li-Yorke chaotic operator; distributionally chaotic operator; hypercyclic operator; connectedness PDFBibTeX XMLCite \textit{B. Hou} et al., J. Oper. Theory 67, No. 2, 469--493 (2012; Zbl 1261.47016)