Title of article
The Numerical Ranges of Automorphic Composition Operators
Author/Authors
Paul S. Bourdon، نويسنده , , Joel H. Shapiro، نويسنده ,
Issue Information
دوهفته نامه با شماره پیاپی سال 2000
Pages
16
From page
839
To page
854
Abstract
We investigate the shape of the numerical range for composition operators
induced on the Hardy space H2 by conformal automorphisms of the unit disc. We
show that usually, but not always, such operators have numerical ranges whose
closures are discs centered at the origin. Surprising open questions arise from our
investigation.
Journal title
Journal of Mathematical Analysis and Applications
Serial Year
2000
Journal title
Journal of Mathematical Analysis and Applications
Record number
932319
Link To Document