Let g be a holomorphic map of B , where B is the unit ball of Cn . This paper gives necessary and sufficient conditions for the extended Cesáro operators induced by g to be bounded or compact on BMOA.

there are many different ways to subdivide the spectrum of a bounded linear operator; some of them aremotivated by applications to physics (in particular, quantum mechanics). in this study, the relationship betweenthe subdivisions of spectrum which are not required to be disjoint and goldberg's classification are given.moreover, these subdivisions for some summability methods are studied.

Let g be a holomorphic map of B, where B is the unit ball of C. Let 0 < p < +∞,−n − 1 < q < +∞, q > −1 and α > 0. This paper gives some necessary and sufficient conditions for the Extended Cesáro Operators induced by g to be bounded or compact between generalized Besov space B(p, q) and αBloch space B.

The following conjecture was posed by Axler and Shields. Let {xn} be a monotone decreasing sequence of nonnegative numbers, C the Cesáro matrix of order one. What is the best constant K for which ‖Cx‖2 ≥ K‖x‖2 for all such sequences {xn}? Lyons [3] determined that the best constant is π/ √ 6. This result was extended to p spaces for p > 1 by Bennett [1]. In [1], Bennett established the followin...

The weighted Cesáro operator Ch in ` (h)-spaces is investigated in terms of several concepts of normality, where h denotes a positive discrete measure on N0. We classify exactly those h for which Ch is hyponormal. Two examples related to the Haar measures of orthogonal polynomials are discussed. We show that the Cesáro operator is not always paranormal. Furthermore, we prove that the Cesáro ope...

Mathematical concepts are aesthetic tools that useful to create methods or solutions real-world problems in theory and practice, sometimes contain symmetrical asymmetrical structures due the nature of problems. In this study, we investigate whether sequence spaces Xpq, 0≤p&lt;∞, X∞, which constructed by q-Cesáro matrix, satisfy some further properties described with respect bounded linear opera...