15 citations · 35 across the 10 of their papers we have counts for
10 papers
Toeplitz operators on some function spaces
Chafiq Benhida, George R. Exner, Ji Eun Lee +1
We reconsider studies of Toeplitz operators on function spaces (the weighted Bergman space, the generalized derivative Hardy space) and the H-Toeplitz operators on the Bergman spac…
Signed representing measures (Berger-type charges) in subnormality and related properties of weighted shifts
Chafiq Benhida, Raúl E. Curto, George R. Exner
In the study of the geometrically regular weighted shifts (GRWS) -- see [5] -- signed power representing measures (which we call Berger-type charges) played an important role. Moti…
and safe quotients for GRWS
Chafiq Benhida, Raúl E. Curto, George R. Exner
Geometrically regular weighted shifts (in short, GRWS) are those with weights given by , where and is fixed in…
Geometrically regular weighted shifts
Chafiq Benhida, Raul E. Curto, George R. Exner
We study a general class of weighted shifts whose weights are given by , where and and are parameters so that $(N,D) \in (…
Conditional positive definiteness as a bridge between k-hyponormality and n-contractivity
Chafiq Benhida, Raul E. Curto, George R. Exner
For sequences of positive real numbers, called weights, we study the weighted shift operators having the property of moment infinite divisibi…
Moment Infinite Divisibility of Weighted Shifts: Sequence Conditions
Chafiq Benhida, Raul E. Curto, George R. Exner
We consider weighted shift operators having the property of moment infinite divisibility; that is, for any , the shift is subnormal when every weight (equivalently, every mo…