Notes on q-deformed operators

• Autorzy: Schôichi Ôta , Franciszek Hugon Szafraniec
• Języki publikacji: EN

Abstrakty

EN

The paper concerns operators of deformed structure like q-normal and q-hyponormal operators with the deformation parameter q being a positive number different from 1. In particular, an example of a q-hyponormal operator with empty spectrum is given, and q-hyponormality is characterized in terms of some operator inequalities.

Kategorie tematyczne

• 47A05: General (adjoints, conjugates, products, inverses, domains, ranges, etc.)
• 47B25: Symmetric and selfadjoint operators (unbounded)
• 47A10: Spectrum, resolvent

• Wydawca: Institute of Mathematics Polish Academy of Sciences
• Czasopismo: Studia Mathematica
• Rocznik: 2004
• Tom: 165
• Numer: 3
• Strony: 295-301

Daty

wydano

2004

Twórcy

autor

Schôichi Ôta

• Department of Art and Information Design, Kyushu University, 4-9-1 Shiobaru, Fukuoka, 815-8540 Japan

autor

Franciszek Hugon Szafraniec

• Institute of Mathematics, Jagiellonian University, Reymonta 4, 30-059 Kraków, Poland

Identyfikatory

DOI

10.4064/sm165-3-7