Results 51 to 60 of about 269,754 (160)

On the Hankel determinants of close-to-convex univalent functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1980
The rate of growth of Hankel determinant for close-to-convex functions is determined. The results in this paper are best possible.
K. Inayat Noor
doaj   +1 more source

A Complex‐Frequency Framework for Kerker Unidirectionality in Photonic Resonators

open access: yesLaser &Photonics Reviews, EarlyView.
ABSTRACT Electromagnetic scattering exhibits various anomalous behaviors, such as forward or backward scattering effects known as the Kerker conditions. These anomalies appear in non‐Hermitian photonic resonators and are mathematically described by operators with complex eigenfrequencies.
Loubnan Abou Hamdan   +8 more
wiley   +1 more source

Tensor‐Based Reduction of Linear Parameter‐Varying State‐Space Models

open access: yesInternational Journal of Robust and Nonlinear Control, EarlyView.
ABSTRACT The linear parameter‐varying (LPV) framework is a powerful tool for controlling nonlinear (NL) and complex systems, but the conversion of NL models into LPV forms often results in high‐dimensional and overly conservative LPV models. To be able to apply control strategies, there is often a need for model reduction in order to reduce ...
Bogoljub Terzin   +4 more
wiley   +1 more source

Zero‐shot learning enabled image enhancement in Bessel beam light sheet fluorescence microscopy

open access: yesVIEW, EarlyView.
A physics‐guided, unsupervised deep learning‐based image restoration framework for Bessel beam light sheet fluorescence microscopy that suppresses side‐lobe‐induced artifacts is presented. The proposed zero‐shot approach achieved 2.2‐fold increase in signal‐to‐noise ratio and 89% contrast improvement in mouse kidney tissue images, demonstrating its ...
Yujie Dong   +4 more
wiley   +1 more source

Third Hankel determinant for a subclass of convex functions associated with a domain bounded by an epicycloid

open access: yesJournal of Inequalities and Applications
In the current study, we investigate a subclass of convex functions, denoted by K n − 1 , L $\mathcal{K}_{n-1,\mathcal{L}}$ , associated with a domain bounded by an epicycloid with n − 1 $n-1$ cusps.
E. K. Nithiyanandham, B. Srutha Keerthi
doaj   +1 more source

Second Hankel determinant for a class of analytic functions defined by q-derivative operator

open access: yesAnalele Stiintifice ale Universitatii Ovidius Constanta: Seria Matematica, 2019
In this paper, we obtain the estimates for the second Hankel determinant for a class of analytic functions defined by q-derivative operator and subordinate to an analytic function.
Răducanu Dorina
doaj   +1 more source

Frequency‐dependent contraction rates for the Bayesian method to the inverse source problem

open access: yesTransactions of the London Mathematical Society, Volume 13, Issue 1, December 2026.
Abstract This paper addresses an inverse source problem for acoustic waves in a range of frequencies. Our study has two main goals. First, although the problem is severely ill‐posed with a logarithmic stability estimate, we demonstrate, through careful analysis of the forward map's singular values, that increasing the frequency range enhances stability,
Pu‐Zhao Kow, Jenn‐Nan Wang
wiley   +1 more source

Polynomial-exponential 2D data models, Hankel-block-Hankel matrices and zero-dimensional ideals

open access: yes, 2011
Subspace-based methods are popular for analysis of two-dimensional data that can be modeled by sums of polynomially modulated exponential (or “polynomial-exponential”) functions.
Usevich, Konstantin
core   +1 more source

Long‐Term Earthquake Response in a Midrise Reinforced Concrete Building: Insights From Hybrid Seismic Monitoring

open access: yesEarthquake Spectra, Volume 42, Issue 4, November 2026.
We present a multidecadal analysis of the seismic response of a midrise reinforced concrete (RC) building in Taipei, Taiwan, combining legacy strong‐motion accelerograph (SMA‐1) data with recent recordings from a dense array of low‐cost microelectromechanical systems (MEMS)‐based Quake Structural Integrity System (QSIS) sensors.
Utpal Kumar   +3 more
wiley   +1 more source

Upper Bound of second Hankel determinant for certain generalized glass of starlike functions / Muhammad AqiI Shahruddin ... [et al.] [PDF]

open access: yes, 2021
The study of Hankel determinant is one of the most famous coefficient inequalities in geometric theory tiinctions that still being study by many researchers.
Joey Manuel, Maxcen   +3 more
core  

Home - About - Disclaimer - Privacy