functions 
and 
which
have mutually prime singular factors, 
has
a trivial singular inner factor for all complex numbers w, except
at most for those w in a set of logarithmic capacity zero.
By Stephen D. Fisher and Jonathan E. Shapiro
This paper appears in the Michigan Mathematical Journal, 44 (1997),
231-237.
Abstract:
We prove that for functions and which
have mutually prime singular factors, has
a trivial singular inner factor for all complex numbers w, except
at most for those w in a set of logarithmic capacity zero.
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