Bulletin of the London Mathematical Society Advance Access published online on April 1, 2008
Bulletin of the London Mathematical Society, doi:10.1112/blms/bdm114
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© 2008 London Mathematical Society
Division by inner functions in a class of composition operators on Lipschitz spaces

Faculty of Mathematics
University of Belgrade
Studentski trg 16
11001 Belgrade, p.p. 550
Serbia
Received 11 September 2006. Revision received 19 April 2007.
We prove that the class
, where H
and
are holomorphic Lipschitz spaces, has the f-property for p
1, 0<β<1: If
where I is an inner function, then
Also we characterize inner functions that belong to
for p>0, 0<
1 and 0<β
1. The results are deduced from a new, derivative-free, characterization of
that extends some results of Dyakonov [Acta Math. 178 (1997) 143–167.] and the author [Acta Math. 183 (1999) 141–143; J. Math. Anal. Appl., 326 (2007) 1–11].
2000 Mathematics Subject Classification 47B38, 30H05, 30D55, 46E15, 47B07.
S Serbia, Project no. ON144010.