Results 61 to 70 of about 1,809,211 (228)
Mathematics, 2019 In this paper, we study periodic tridiagonal Toeplitz matrices with perturbed corners. By using some matrix transformations, the Schur complement and matrix decompositions techniques, as well as the Sherman-Morrison-Woodbury formula, we derive explicit ...
Yunlan Wei +3 more
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Hermitian-Toeplitz determinants for a subclass of analytic functions
Mathematics and Computer ScienceIn this study, we obtain sharp bounds for the second Hermitian- Toeplitz determinants of a subclass of analytics functions in the open unit disk.
M. Buyankara, M. Çağlar
semanticscholar +1 more source
Magnetic Resonance in Medicine, Volume 96, Issue 4, Page 1572-1588, October 2026.ABSTRACT Purpose To develop a software‐based active electromagnetic interference (EMI) suppression (AES) framework on whole‐body multi‐channel MRI systems for reliable MRI and MR thermometry during MRI‐guided microwave ablation (MWA). Methods In addition to primary imaging coils, an unloaded standard body array coil was positioned outside the imaging ...
Qing Dai +5 more
wiley +1 more source
Toeplitz and Hankel Determinants for Certain Subclasses Associated with Sakaguchi Type Functions
Mathematical and Computational ApplicationsIn this work, we establish bounds for Hermitian Toeplitz determinants of orders two and three for distinct subclasses of symmetric starlike functions associated with balloon-, limaçon-, and bean-shaped domains.
Mohammed Ali Alamri +5 more
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Toeplitz Determinants for the Class of Functions with Bounded Turning
European Journal of Pure and Applied Mathematics, 2022 In this paper, we obtain the upper bounds of the Toeplitz determinants for the class of functions with bounded turning. We also present some consequences of our main results. Some estimates obtained on Toeplitz determinants are sharp.
Nur Hazwani Aqilah Abdul Wahid +3 more
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Analysis of Eigenvalue Clustering Leads to Optimal Scaling in Numerical Radiative Transfer
Numerical Linear Algebra with Applications, Volume 33, Issue 5, October 2026.ABSTRACT We consider a multidimensional polychromatic radiative transfer (RT) problem, accounting for scattering processes in a general form, that is, anisotropic (dipole) scattering with partial frequency redistribution. Given a discrete ordinates (SN$$ {S}_N $$) discretization, we report the corresponding matrix structures, depending on the model and
Pietro Benedusi +3 more
wiley +1 more source
Concrete Operators, 2023 In this article, we define a new subclass of analytic functions ℛ(t,δ){\mathcal{ {\mathcal R} }}\left(t,\delta ) in the open unit disk D{\mathbb{D}} associated with the petal-shaped domain.
Aarthy B., Keerthi B. Srutha
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Forecasting With Dynamic Factor Models Estimated by Partial Least Squares
Journal of Forecasting, Volume 45, Issue 6, Page 2785-2806, September 2026.ABSTRACT Dynamic factor models (DFMs) have found great success in nowcasting and short‐term macroeconomic forecasting when incorporating large sets of predictive information. The factor loadings are typically estimated cross‐sectionally with principal component analysis (PCA) or maximum likelihood (ML), which ignore whether the factors have predictive ...
Samuel Rauhala
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Sharp Bounds of the Hermitian Toeplitz Determinants for Certain Close-to-Star Functions
Bulletin of the Iranian Mathematical Society, 2022 The sharp lower and upper bounds of the Hermitian Toeplitz determinants of the second and third order for certain close-to-star functions are computed.
A. Lecko, Barbara Śmiarowska
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The determination of companion matrices characterizing toeplitz and r-Toeplitz matrices
Linear Algebra and its Applications, 1989 The purpose is to show that a companion Toeplitz (T) matrix and its r- Toeplitz (S) matrix counterpart can be replaced by much simpler results if one considers the inverses of T and S.
openaire +1 more source