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math.FA2020★ 7 cited
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…
math.FA2020★ 1 cited
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…