
arXiv: 2012.05279
Let $A_\Phi$ be a matrix valued truncated Toeplitz operator -- the compression of multiplication operator to the vector valued model space $H^2(E)\ominus \Theta H^2(E)$, where $\Theta$ is a matrix valued non constant inner function. Under supplementary assumptions, we find necessary and sufficient condition that the product $A_\Phi A_\Psi$ is itself a matrix valued truncated Toeplitz operator.
Matematik, model spaces, Mathematical Sciences, Functional Analysis (math.FA), truncated Toeplitz operator, Mathematics - Functional Analysis, model spaces;truncated Toeplitz operator;inner function, Mathematics - Quantum Algebra, Toeplitz operators, Hankel operators, Wiener-Hopf operators, FOS: Mathematics, Quantum Algebra (math.QA), inner function
Matematik, model spaces, Mathematical Sciences, Functional Analysis (math.FA), truncated Toeplitz operator, Mathematics - Functional Analysis, model spaces;truncated Toeplitz operator;inner function, Mathematics - Quantum Algebra, Toeplitz operators, Hankel operators, Wiener-Hopf operators, FOS: Mathematics, Quantum Algebra (math.QA), inner function
| selected citations These citations are derived from selected sources. This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | 1 | |
| popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network. | Average | |
| influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically). | Average | |
| impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network. | Average |
