Essential Spectra of Composition Operators on the Space of Bounded Analytic Functions


GÜL U.

TURKISH JOURNAL OF MATHEMATICS, cilt.32, sa.4, ss.475-480, 2008 (SCI İndekslerine Giren Dergi) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 32 Konu: 4
  • Basım Tarihi: 2008
  • Dergi Adı: TURKISH JOURNAL OF MATHEMATICS
  • Sayfa Sayıları: ss.475-480

Özet

In this small note we characterize the essential spectra of a class of composition operators on H-infinity(H) of the upper half-plane H and on H-infinity(D) of the unit disc D. These composition operators are induced by perturbations of translations.