Results 11 to 20 of about 1,125 (122)
Exterior products of operators and superoptimal analytic approximation
Transactions of the London Mathematical Society, Volume 8, Issue 1, Page 299-412, December 2021., 2021 Abstract We give a new algorithm for the construction of the unique superoptimal analytic approximant of a given continuous matrix‐valued function on the unit circle, using exterior powers of operators in preference to spectral or Wiener–Masani factorizations.
Dimitrios Chiotis +2 more
wiley +1 more source
A derivative-Hilbert operator acting on Dirichlet spaces
Open Mathematics, 2023 Let μ\mu be a positive Borel measure on the interval [0,1)\left[0,1). The Hankel matrix Hμ=(μn,k)n,k≥0{{\mathcal{ {\mathcal H} }}}_{\mu }={\left({\mu }_{n,k})}_{n,k\ge 0} with entries μn,k=μn+k{\mu }_{n,k}={\mu }_{n+k}, where μn=∫[0,1)tndμ(t){\mu }_{n}={
Xu Yun, Ye Shanli, Zhou Zhihui
doaj +1 more source
Miskolc Mathematical Notes, 2021 . In this paper, we explain some sufficient conditions for unitariness of Toeplitz operators and little Hankel operators on the Bergman space.
Chinmayee Padhy, P. Jena, S. Paikray
semanticscholar +1 more source
Hypercyclicity of Composition Operators on Orlicz Function Spaces
Moroccan Journal of Pure and Applied Analysis, 2020 In this paper, we discuss the hypercyclic properties of composition operators on Orlicz function spaces. We give some different conditions under which a composition operator on Orlicz spaces is hyper-cyclic or not. Similarly, multiplication operators are
Jafari F., Kamali Z.
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A new proof of a Nordgren, Rosenthal and Wintrobe Theorem on universal operators [PDF]
, 2017 A striking result by Nordgren, Rosenthal and Wintrobe states that the Invariant Subspace Problem is equivalent to the fact that any minimal invariant subspace for a composition operator Cφ induced by a hyperbolic automorphism φ of the unit disc D acting ...
Cowen, Carl C. +1 more
core +1 more source
On linear chaos in function spaces
Demonstratio Mathematica, 2022 We show that, in Lp(0,∞){L}_{p}\left(0,\infty ) (1 ...
Jimenez John M., Markin Marat V.
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Compact weighted composition operators and fixed points in convex domains [PDF]
, 2006 We extend a classical result of Caughran/Schwartz and another recent result of Gunatillake by showing that if D is a bounded, convex domain in n-dimensional complex space, m is a holomorphic function on D and bounded away from zero toward the boundary of
Clahane, Dana D.
core +5 more sources
Radial growth of the derivatives of analytic functions in Besov spaces
Concrete Operators, 2020 For 1 < p < ∞, the Besov space Bp consists of those functions f which are analytic in the unit disc 𝔻 = {z ∈ : |z| < 1} and satisfy ∫𝔻(1 − |z|2)p−2|f ′(z)|p dA(z) < ∞. The space B2 reduces to the classical Dirichlet space 𝒟.
Domínguez Salvador, Girela Daniel
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On Stević-Sharma type operator from the Besov spaces into the weighted-type space H^∞_μ
Mathematical Inequalities & Applications, 2019 We completely describe the boundedness and compactness of Stević-Sharma type operator Tψ1 ,ψ2,φ from the Besov spaces Bp (1 < p < ∞) into the weighted-type space H ∞ μ or the little weighted-type space H∞ μ ,0 . Mathematics subject classification (2010):
Yongmin Liu, Yanyan Yu
semanticscholar +1 more source
Commutators of Hardy-Littlewood operators on p-adic function spaces with variable exponents
Open Mathematics, 2023 In this article, we obtain some sufficient conditions for the boundedness of commutators of pp-adic Hardy-Littlewood operators with symbols in central bounded mean oscillation space and Lipschitz space on the pp-adic function spaces with variable ...
Dung Kieu Huu, Thuy Pham Thi Kim
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