Results 31 to 40 of about 2,232,899 (337)
Compact Operators via the Berezin Transform [PDF]
, 1998 In this paper we prove that if S equals a finite sum of finite products of Toeplitz operators on the Bergman space of the unit disk, then S is compact if and only if the Berezin transform of S equals 0 on the boundary of the disk. This result is new even
Axler, Sheldon, Zheng, Dechao
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Some new Fibonacci difference spaces of non-absolute type and compact operators [PDF]
, 2016 In this paper, we introduce the spaces and which are the BK-spaces of non-absolute type and also derive some inclusion relations. Further, we determine the duals of those spaces and also construct their bases.
Anupam Das, B. Hazarika
semanticscholar +1 more source
Global functional calculus for operators on compact Lie groups [PDF]
, 2014 In this paper we develop the functional calculus for elliptic operators on compact Lie groups without the assumption that the operator is a classical pseudo-differential operator. Consequently, we provide a symbolic descriptions of complex powers of such
Ruzhansky, Michael, Wirth, Jens
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Some properties of weak Banach-Saks operators [PDF]
Mathematica Bohemica, 2021 We establish necessary and sufficient conditions under which weak Banach-Saks operators are weakly compact (respectively, {\rm L}-weakly compact; respectively, {\rm M}-weakly compact).
Othman Aboutafail +2 more
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Journal of Functional Analysis, 2019 22 ...
Javier Alejandro Chávez-Domínguez +2 more
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Commutativity of normal compact operators via projective spectrum [PDF]
, 2016 In this note, we will study the commutativity of normal compact operators with strong Agmon's condition by using the projective spectrum. This generalizes the result in MR3449218.
Tong Mao, Yikun Qiao, Penghui Wang
semanticscholar +1 more source
Analytic Families of Self-Adjoint Compact Operators Which Commute with Their Derivative
Communications in Advanced Mathematical Sciences, 2020 Spectral properties of analytic families of compact operators on a Hilbert space are studied. The results obtained are then used to establish that an analytic family of self-adjoint compact operators on a Hilbert space $\mathcal{H},$ which commute with ...
Abdelaziz Maouche
doaj +1 more source
Weighted Composition Operators Between Extended Lipschitz Algebras on Compact Metric Spaces [PDF]
Sahand Communications in Mathematical Analysis, 2020 In this paper, we provide a complete description of weighted composition operators between extended Lipschitz algebras on compact metric spaces. We give necessary and sufficient conditions for the injectivity and the sujectivity of these operators.
Reyhaneh Bagheri, Davood Alimohammadi
doaj +1 more source
Compact operators in TRO’s [PDF]
Proceedings of the American Mathematical Society, 2012 We give a geometric characterization of the elements of a TRO that can be represented as compact operators by a faithful representation of the TRO.
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Functions of self‐adjoint operators in ideals of compact operators [PDF]
Journal of the London Mathematical Society, 2015 For self‐adjoint operators A,B , a bounded operator J , and a function f:R→C , we obtain bounds in quasi‐normed ideals of compact operators for the difference f(A)J−Jf(B) in terms of the operator AJ−JB .
A. Sobolev
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