Results 11 to 20 of about 598 (181)

Coil Sketching for Fast and Efficient 4D Lung MRI Reconstruction. [PDF]

Magn Reson Med
ABSTRACT Purpose To develop and evaluate a memory‐efficient and accelerated reconstruction framework for respiratory‐resolved 4D lung MRI using coil sketching and Toeplitz approximation, enabling high‐quality motion‐compensated low‐rank (MoCo‐LR) reconstructions on clinically accessible GPU hardware.
Plummer JW, Daudé P, Tsakirellis A, Taylor J, Moss J, Ramasawmy R, Javed A, Campbell-Washburn AE.   +7 more
europepmc   +2 more sources

On Compactness of Products of Toeplitz Operators. [PDF]

Complex Anal Oper Theory
Abstract We study compactness of product of Toeplitz operators with symbols continuous on the closure of the polydisc in terms of behavior of the symbols on the boundary. For certain classes of symbols f and g, we show that $$T_fT_g$$
Le T, Rodriguez TM, Şahutoğlu S.
europepmc   +5 more sources

Toeplitz and slant Toeplitz operators on the polydisk [PDF]

Arab Journal of Mathematical Sciences, 2020
For n ≥ 1, let Dn be the polydisk in ℂn, and let Tn be the n-torus. L2(Tn) denotes the space of Lebesgue square integrable functions on Tn. In this paper we define slant Toeplitz operators on L2(Tn). Besides giving a necessary and sufficient condition for an operator on L2(Tn) to be slant Toeplitz, we also establish several properties of slant Toeplitz
Munmun Hazarika, Sougata Marik
openaire   +4 more sources

Online Spatiotemporally Constrained Reconstruction for Real-Time Interactive MRI. [PDF]

Magn Reson Med
ABSTRACT Purpose To develop a low‐latency dynamic MRI reconstruction that provides better spatial and temporal fidelity than contemporary online reconstruction, for localization. Methods We utilize online spatiotemporally constrained reconstruction (STCR) using a computationally efficient augmented Lagrangian solution and a limited number of iterations
Le DH, Kumar P, Yagiz E, Tian Y, Nayak KS.   +4 more
europepmc   +2 more sources

On kth-order slant weighted Toeplitz operator. [PDF]

ScientificWorldJournal, 2013
Let be a sequence of positive numbers with , when and when . A th-order slant weighted Toeplitz operator on is given by , where is the multiplication on and is an operator on given by , being the orthonormal basis for . In this paper, we define
Arora SC, Kathuria R.
europepmc   +2 more sources

Dual Toeplitz Operators on the Orthogonal Complement of the Fock–Sobolev Space

Journal of Mathematics, 2023
In this paper, we consider the dual Toeplitz operators on the orthogonal complement of the Fock–Sobolev space and characterize their boundedness and compactness.
Li He, Biqian Wu
doaj   +1 more source

Sharp function estimates and boundedness for Toeplitz-type operators associated with general fractional integral operators

Open Mathematics, 2021
In this paper, we establish some sharp maximal function estimates for certain Toeplitz-type operators associated with some fractional integral operators with general kernel.
Chen Dazhao, Huang Hui
doaj   +1 more source

Hypercyclic Toeplitz Operators [PDF]

Results in Mathematics, 2016
Minor corrections.
Anton Baranov, Andrei Lishanskii
openaire   +3 more sources

Asymmetric truncated Toeplitz operators and Toeplitz operators with matrix symbol [PDF]

Journal of Operator Theory, 2017
Truncated Toeplitz operators and their asymmetric versions are studied in the context of the Hardy space $H^p$ of the half-plane for ...
Camara, MC, Partington, JR
openaire   +3 more sources

Remarks on hyponormal Toeplitz operators with nonharmonic symbols

Open Mathematics, 2023
In this article, we present some necessary or sufficient conditions for the hyponormality of Toeplitz operator Tφ{T}_{\varphi } on the Bergman space A2(D){A}^{2}\left({\mathbb{D}}).
Kim Sumin, Lee Jongrak
doaj   +1 more source