Results 61 to 70 of about 92 (86)

Weakly k-hyponormal and polynomially hyponormal commuting operator pairs

Science China Mathematics, 2014
The authors introduce the notion of weak \(k\)-hyponormality and polynomial hyponormality for commuting operator pairs on a Hilbert space and investigate their relationship with \(k\)-hyponormality and subnormality. They provide examples of 2-variable weighted shifts which are weakly 1-hyponormal but not hyponormal.
Duan, YongJiang, Qi, TingTing
openaire   +1 more source

D-hyponormal and D-quasi-hyponormal Operators

Communications in Mathematics and Applications, 2022
Nadia Mesbah, Hadia Messaoudene
openaire   +1 more source

Quasi-similarp-hyponormal operators

Integral Equations and Operator Theory, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire   +1 more source

Hyponormal block Toeplitz operators and the Carathéodory interpolation problems

Journal of Mathematical Analysis and Applications, 2022
In Sung Hwang
exaly  

Remarks on hyponormal Toeplitz operators with nonharmonic symbols

Open Mathematics, 2023
Jongrak Lee
exaly  

Characterizations of p-hyponormal and weak hyponormal weighted composition operators

Acta Scientiarum Mathematicarum, 2010
Takeaki Yamazaki, Muneo Cho, Cho Muneo   +2 more
exaly  

Characterizations of normal, hyponormal and EP operators

Journal of Mathematical Analysis and Applications, 2007
Dragan Djordjevic
exaly  

HYPONORMAL TOEPLITZ OPERATORS ON THE BERGMAN SPACE

Journal of the Korean Mathematical Society, 2005
In Sung Hwang, Hwang In Sung
exaly  

Properties of p-ω-hyponormal operators

Applied Mathematics, 2006
Yang Changsen, Changsen Yang
exaly  

An Operator Transform from Class A to the Class of Hyponormal Operators and its Application

Integral Equations and Operator Theory, 2005
Takeaki Yamazaki, Muneo Cho, Cho Muneo   +2 more
exaly