2 citations · 4 across the 11 of their papers we have counts for
11 papers
Hilbert-Schmidt composition-differentiation operators on the unit ball
Ali Abkar
We use the notion of radial derivative to introduce composition-differentiation operators on the Hardy and Bergman spaces of the unit ball and the polydisk. We seek for necessary a…
Approximation in weighted holomorphic Besov spaces in C^n
Ali Abkar
We study certain weighted Bergman and weighted Besov spaces of holomorphic functions in the polydisk and in the unit ball. We seek Mergelyan-type conditions on the non-radial weigh…
Polyanalytic Besov spaces and approximation by dilatations
Ali Abkar
Using partial derivatives and $\partial_{\ol z}f$, we introduce Besov spaces of polyanalytic functions on the unit disk and on the upper half-plane. We then prove tha…
Non-radial weights and polynomial approximation in spaces of analytic functions
Ali Abkar
We study sufficient conditions on weight functions under which norm approximations by analytic polynomials are possible. The weights we study include radial, non-radial, and angula…
Proximal quasi-normal structure and existence of best proximity points
Farhad Fouladi, Ali Abkar
In this paper, we use the concept of proximal quasi-normal structure (P. Q-N. S) to study the existence of best proximity points for cyclic mappings, cyclic contractions, relativel…
Tripartite coincidence-best proximity points in generalized metric spaces
Masoud Norouzian, Ali Abkar
We first introduce a notion of convex structure in generalized metric spaces, then we introduce tripartite contractions, tripartite semi-contractions, tripartite coincidence points…