26 citations · 55 across the 41 of their papers we have counts for
4 papers · 2 filters
Operators invariant relative to a completely nonunitary contraction
H. Bercovici, D. Timotin
Given a contraction A on a Hilbert space H, an operator T on H is said to be A-invariant if <Tx,x>=<TAx,Ax> for every x in H such that ||Ax||=||x||. In the special case in which bo…
Matrix valued truncated Toeplitz operators: basic properties
Rewayat Khan, Dan Timotin
Matrix valued truncated Toeplitz operators act on vector-valued model spaces. They represent a generalization of block Toeplitz matrices. A characterization of these operators anal…
A Szegö type theorem for truncated Toeplitz operators
Elizabeth Strouse, Dan Timotin, Mohamed Zarrabi
Truncated Toeplitz operators are compressions of multiplication operators on to model spaces (that is, subspaces of which are invariant with respect to the backward shi…
Truncated Toeplitz operators and complex symmetries
Hari Bercovici, Dan Timotin
We show that truncated Toeplitz operators are characterized by a collection of complex symmetries. This was conjectured by Klis-Garlicka, Lanucha, and Ptak, and proved by them in s…