Results 71 to 80 of about 598 (181)

Toeplitz Operators on the Weighted Bergman Space over the Two-Dimensional Unit Ball

Journal of Function Spaces, 2015
We extend the known results on commutative Banach algebras generated by Toeplitz operators with radial quasi-homogeneous symbols on the two-dimensional unit ball.
Alma García, Nikolai Vasilevski
doaj   +1 more source

Shifted model spaces and their orthogonal decompositions [PDF]

Opuscula Mathematica
We generalize certain well known orthogonal decompositions of model spaces and obtain similar decompositions for the wider class of shifted model spaces, allowing us to establish conditions for near invariance of the latter with respect to certain ...
M. Cristina Câmara, Kamila Kliś-Garlicka, Marek Ptak   +2 more
doaj   +1 more source

Large Multi‐Response Linear Regression Estimation Based on Low‐Rank Pre‐Smoothing

Statistical Analysis and Data Mining: An ASA Data Science Journal, Volume 19, Issue 2, April 2026.
ABSTRACT Pre‐smoothing is a technique aimed at increasing the signal‐to‐noise ratio in data to improve subsequent estimation and model selection in regression problems. However, pre‐smoothing has thus far been limited to the univariate response regression setting.
Xinle Tian, Alex Gibberd, Matthew A. Nunes, Sandipan Roy   +3 more
wiley   +1 more source

Toeplitz Operators on Abstract Hardy Spaces Built upon Banach Function Spaces

Journal of Function Spaces, 2017
Let X be a Banach function space over the unit circle T and let H[X] be the abstract Hardy space built upon X. If the Riesz projection P is bounded on X and a∈L∞, then the Toeplitz operator Taf=P(af) is bounded on H[X].
Alexei Yu. Karlovich
doaj   +1 more source

Breaking Barriers in High‐Order Spectral Methods: The Intrinsic Matrix Approach

International Journal for Numerical Methods in Engineering, Volume 127, Issue 5, 15 March 2026.
ABSTRACT This paper introduces a unified framework in Hilbert spaces for applying high‐order differential operators in bounded domains using Chebyshev, Legendre, and Fourier spectral methods. By exploiting the banded structure of differentiation matrices and embedding boundary conditions directly into the operator through a scaling law relating ...
Osvaldo Guimarães, José R. C. Piqueira
wiley   +1 more source

Toeplitz Operators on Weighted Bergman Spaces

Journal of Function Spaces and Applications, 2013
We characterize the boundedness and compactness of a Toeplitz-type operator on weighted Bergman spaces satisfying the Bekollé-Bonami condition in terms of the Berezin transform.
Gerardo R. Chacón
doaj   +1 more source

Toeplitz Operator and Carleson Measure on Weighted Bloch Spaces

Journal of Function Spaces, 2019
In this paper, we consider Toeplitz operator acting on weighted Bloch spaces. Meanwhile, the inclusion map from weighted Bloch spaces into tent space is also investigated.
Yanhua Zhang
doaj   +1 more source

A note on Berezin-Toeplitz quantization of the Laplace operator

Complex Manifolds, 2015
Given a Hodge manifold, it is introduced a self-adjoint operator on the space of endomorphisms of the global holomorphic sections of the polarization line bundle.
Vedova Alberto Della
doaj   +1 more source

Hyponormality on a Weighted Bergman Space

Journal of Function Spaces, 2020
A bounded Hilbert space operator T is hyponormal if T∗T−TT∗ is a positive operator. We consider the hyponormality of Toeplitz operators on a weighted Bergman space.
Houcine Sadraoui, Borhen Halouani, Mubariz T. Garayev, Adel AlShehri   +3 more
doaj   +1 more source

The Numerical Range of Toeplitz Operator on the Polydisk

Abstract and Applied Analysis, 2009
The numerical range and normality of Toeplitz operator acting on the Bergman space and pluriharmonic Bergman space on the polydisk is investigated in this paper.
Dinggui Gu
doaj   +1 more source