Operators associated with the pentablock and their relations with biball and symmetrized bidisc
Abstract
A commuting triple of Hilbert space operators \((A,S,P)\) is said to be a \($\mathbb{P}\)-contraction if the closed pentablock \(\overline{\mathbb P}\) is a spectral set for \((A,S,P)\), where \[\mathbb{P}:=\{(a_{21}, \mbox{tr}(A_0), \mbox{det}(A_0))\colon A_0=[a_{ij}]_{2 \times 2}\ \text{and}\ \|A_0\|
Fields of Study & Subjects
Holomorphic and Operator Theory
Organometallic Compounds Synthesis and Characterization
Bone health and treatments
Publication details
- Journal / source
- Annales Fennici Mathematici
- Volume
- 51
- Issue
- 1
- Pages
- 287–324
- Publication date
- 18 May 2026
- Language
- EN