Results 11 to 20 of about 2,334 (224)
Coil Sketching for Fast and Efficient 4D Lung MRI Reconstruction. [PDF]
Magn Reson MedABSTRACT 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 +7 more
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IEEE Transactions on Quantum Engineering, 2023 Toeplitz matrix reconstruction algorithms (TMRAs) are one of the central subroutines in array processing for wireless communication applications. The classical TMRAs have shown excellent accuracy in the spectral estimation for both uncorrelated and ...
Mostafizur Rahaman Laskar +2 more
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Generalized Crofoot transform and applications
Concrete Operators, 2023 Matrix-valued asymmetric truncated Toeplitz operators are compressions of multiplication operators acting between two model spaces. These are the generalization of matrix-valued truncated Toeplitz operators. In this article, we describe symbols of matrix-
Khan Rewayat, Farooq Aamir
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Hamiltonicity in Directed Toeplitz Graphs with s1=1 and s3=4
Computational and Mathematical Methods, 2023 A directed Toeplitz graph Tns1,⋯,sk;t1,⋯,tl with vertices 1, 2, ⋯, n is a directed graph whose adjacency matrix is a Toeplitz matrix. In this paper, we investigate the Hamiltonicity in directed Toeplitz graphs Tns1,⋯,sk;t1,⋯,tl with s1=1 and s3=4.
Shabnam Malik
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H-representation method for solving reduced biquaternion matrix equation
Mathematical Modelling and Control, 2022 In this paper, we study the Hankel and Toeplitz solutions of reduced biquaternion matrix equation (1.1). Using semi-tensor product of matrices, the reduced biquaternion matrix equation (1.1) can be transformed into a general matrix equation of the form ...
Xueling Fan +3 more
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Matrix Representations of Asymmetric Truncated Toeplitz Operators [PDF]
Bulletin of the Malaysian Mathematical Sciences Society, 2020 AbstractIn this paper, we describe the matrix representations of asymmetric truncated Toeplitz operators acting between two finite-dimensional model spaces$$K_1$$K1and$$K_2$$K2. The novelty of our approach is that here we consider matrix representations computed with respect to bases of different type in$$K_1$$K1and$$K_2$$K2(for example, kernel basis ...
Joanna Jurasik, Bartosz Łanucha
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Toeplitz-like preconditioner for linear systems from spatial fractional diffusion equations [PDF]
Iranian Journal of Numerical Analysis and Optimization, 2021 The article deals with constructing Toeplitz-like preconditioner for linear systems arising from finite difference discretization of the spatial fractional diffusion equations. The coefficient matrices of these linear systems have an $S+L$ structure,
N. Akhoundi
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Finding the closest Toeplitz matrix [PDF]
Computational & Applied Mathematics, 2003 The constrained least-squares n × n-matrix problem where the feasibility set is the subspace of the Toeplitz matrices is analyzed. The general, the upper and lower triangular cases are solved by making use of the singular value decomposition. For the symmetric case, an algorithm based on the alternate projection method is proposed.
Eberle, Maria Gabriela +1 more
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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 ...
Câmara, M. Cristina +1 more
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