6 papers
Bounded point evaluation for operators with the wandering subspace property
Shailesh Trivedi
We extend and study the notion of bounded point evaluation introduced by Williams for a cyclic operator to the class of operators with the wandering subspace property. We character…
Unitary equivalence of operator-valued multishifts
Rajeev Gupta, Surjit Kumar, Shailesh Trivedi
We systematically study various aspects of operator-valued multishifts. Beginning with basic properties, we show that the class of multishifts on the directed Cartesian product of…
Analytic -isometries without the wandering subspace property
Akash Anand, Sameer Chavan, Shailesh Trivedi
The wandering subspace problem for an analytic norm-increasing -isometry on a Hilbert space asks whether every -invariant subspace of can be gen…
Von Neumann's inequality for commuting operator-valued multishifts
Rajeev Gupta, Surjit Kumar, Shailesh Trivedi
Recently, Hartz proved that every commuting contractive classical multishift with non-zero weights satisfies the matrix-version of von Neumann's inequality. We show that this resul…
Classification of Drury-Arveson-type Hilbert modules associated with certain directed graphs
Sameer Chavan, Deepak Kumar Pradhan, Shailesh Trivedi
Given a directed Cartesian product of locally finite, leafless, rooted directed trees of finite joint branching index, one may ass…
Dirichlet Spaces Associated With Locally Finite Rooted Directed Trees
Sameer Chavan, Deepak Kumar Pradhan, Shailesh Trivedi
Let be a leafless, locally finite rooted directed tree. We associate with a one parameter family of Dirichlet spaces $\mathscr H_q~(q \geq…