Iterated Aluthge transforms of composition operators on H2
Keyword(s):
In this paper, we study various properties of the iterated Aluthge transforms of the composition operators Cφ and Cσ where φ(z) = az + (1 - a) and [Formula: see text] for 0 < a < 1. We express the iterated Aluthge transforms [Formula: see text] and [Formula: see text] as weighted composition operators with linear fractional symbols. As a corollary, we prove that [Formula: see text] and [Formula: see text] are not quasinormal but binormal. In addition, we show that [Formula: see text] and [Formula: see text] are quasisimilar for all non-negative integers n and m. Finally, we show that [Formula: see text] and [Formula: see text] converge to normal operators in the strong operator topology.
2016 ◽
Vol 7
(3)
◽
pp. 161-176
2018 ◽
Vol 85
(1-2)
◽
pp. 92
2017 ◽
Vol 24
(2)
◽
pp. 271-281
2005 ◽
Vol 48
(10)
◽
pp. 1349
◽
Keyword(s):
2010 ◽
Vol 217
(5)
◽
pp. 1939-1943
◽
Keyword(s):