Results 81 to 90 of about 8,275 (212)

Some Results Concerned with Hankel Determinant

Kragujevac Journal of Mathematics, 2023
In this paper, we discuss different versions of the boundary Schwarz lemma and Hankel determinant for K (alpha) class. Also, for the function f(z) = z + c(2)z(2) + c(3)z(3) + center dot center dot center dot defined in the unit disc such that f is an element of X(alpha), we estimate a modulus of the angular derivative of f(z) function at the boundary ...
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Hankel determinant for a general subclass of m-fold symmetric biunivalent functions defined by Ruscheweyh operators

Journal of Inequalities and Applications
Making use of the Hankel determinant and the Ruscheweyh derivative, in this work, we consider a general subclass of m-fold symmetric normalized biunivalent functions defined in the open unit disk. Moreover, we investigate the bounds for the second Hankel
Pishtiwan Othman Sabir, Ravi P. Agarwal, Shabaz Jalil Mohammedfaeq, Pshtiwan Othman Mohammed, Nejmeddine Chorfi, Thabet Abdeljawad   +5 more
doaj   +1 more source

Bounds on third Hankel determinant for close-to-convex functions

Acta Universitatis Sapientiae: Mathematica, 2015
In this paper, we have obtained upper bound on third Hankel determinant for the functions belonging to the class of close-to-convex functions.
Prajapat J. K., Bansal Deepak, Singh Alok, Mishra Ambuj K.   +3 more
doaj   +1 more source

Magnetization in the zig-zag layered Ising model and orthogonal polynomials

, 2021
We discuss the magnetization $M_m$ in the $m$-th column of the zig-zag layered 2D Ising model on a half-plane using Kadanoff-Ceva fermions and orthogonal polynomials techniques.
Chelkak, Dmitry, Hongler, Clément, Mahfouf, Rémy   +2 more
core  

Real‐Time Characterization of Polypropylene Jet Dynamics in Melt Electrospinning Using Laser Diffraction and Image Analysis

Advanced Engineering Materials, Volume 27, Issue 13, July 2025.
This study uses real‐time laser diffraction image analysis to quantify fiber diameter changes and whipping behavior from the nozzle to the collector under varying electric field conditions. By capturing diffraction (scattering) intensity changes and bending angles, melt jet and whipping behavior are accurately assessed, supporting melt electrospinning ...
Jihwan Lim, Eunji Moon, Minseo Kim, Han Seong Kim   +3 more
wiley   +1 more source

Hankel determinants, Fekete-Szegö inequality, and estimates of initial coefficients for certain subclasses of analytic functions

AIMS Mathematics
In this paper, we define new subclasses of analytic functions related to a modified sigmoid function and analytic univalent function. Then, we attempt to investigate the upper bounds of the third and fourth Hankel determinant in the special case. Further,
Wenzheng Hu, Jian Deng
doaj   +1 more source

Field dispersion in uniformly‐excited radial parallel plate waveguides for a compact proton accelerator design

Medical Physics, Volume 52, Issue 7, July 2025.
Abstract Background Proton therapy (PT) is a beneficial modality for treating certain cancers but remains under utilized due in part to the high cost of existing PT devices. Dielectric wall accelerators (DWAs) are a proposed class of coreless induction accelerators that may present a suitable option for compact and affordable PT.
Morgan J. Maher, Christopher M. Lund, Julien Bancheri, David G. Cooke, Jan Seuntjens   +4 more
wiley   +1 more source

Hankel Determinants of the Generalized Factorials

Indian Journal of Pure and Applied Mathematics, 2018
Denote 〈x|d〉 n = x(x + d)(x + 2d) · · · (x + (n - 1)d) for n = 1, 2, · · ·, and 〈x|d〉0 = 1, where 〈x|d〉 n is called the generalized factorial of x with increment d. In this paper, we present the evaluation of Hankel determinants of sequence of generalized factorials.
Sheng-Liang Yang, Yan-Ni Dong
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Rapid quantitative MRI at 46 mT: Accelerated T1 and T2 mapping with low‐rank reconstructions

Magnetic Resonance in Medicine, Volume 94, Issue 1, Page 119-133, July 2025.
Abstract Purpose To evaluate accelerated T1‐ and T2‐mapping techniques for ultra–low‐field MRI using low‐rank reconstruction methods. Methods Two low‐rank–based algorithms, image‐based locally low‐rank (LLR) and k‐space–based structured low‐rank (SLR), were implemented to accelerate T1 and T2 mapping on a 46 mT Halbach MRI scanner.
Yiming Dong, Chloé Najac, Matthias J. P. van Osch, Andrew Webb, Peter Börnert, Beatrice Lena   +5 more
wiley   +1 more source

On the Determinant of a Certain Wiener-Hopf + Hankel Operator [PDF]

Integral Equations and Operator Theory, 2003
We establish an asymptotic formula for determinants of truncated Wiener-Hopf+Hankel operators with symbol equal to the exponential of a constant times the characteristic function of an interval. This is done by reducing it to the corresponding (known) asymptotics for truncated Toeplitz+Hankel operators.
Basor, Estelle L, Ehrhardt, Torsten, Widom, Harold   +2 more
openaire   +5 more sources