Results 51 to 60 of about 828 (215)
Solvability of the Hankel determinant problem for real sequences
, 2018 To each nonzero sequence s := {sn}n≥0 of real numbers, we associate the Hankel determinants Dn = detHn of the Hankel matrices Hn := (si+j)n i,j=0, n ≥ 0, and the nonempty set Ns := {n ≥ 1 Dn-1 ≠ 0}. We also define the Hankel determinant polynomials P0 :=
Christian Berg +3 more
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Upper Bound of second Hankel determinant for certain generalized glass of starlike functions / Muhammad AqiI Shahruddin ... [et al.] [PDF]
, 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
On third order Hankel determinant for inverse functions of certain classes of univalent functions [PDF]
, 2022 In this paper we determine the upper bounds for the Hankel determinant of third order for the inverse functions of functions from some classes of univalent ...
Obradović, Milutin, Tuneski, Nikola
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ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Graphite nanofluids were stabilized using a mixed SDS/Tween 80 surfactant system. The optimized formulation exhibited enhanced colloidal stability, red‐shifted UV–Vis absorption, and improved photothermal conversion under solar irradiation. Achieving stable dispersion of graphite flakes (GFs) in aqueous media remains a critical challenge in developing ...
Ahmad Chehade +3 more
wiley +1 more source
Laser &Photonics Reviews, EarlyView.An optical approach is proposed for real‐time and high‐precision detection of the magnetostrictive deformation of an yttrium‐iron‐garnet sphere in three dimensions, based on the deformation induced spatial high‐order modes of the scattered field, postselection, and balanced homodyne detection.
Xiaomin Liu +5 more
wiley +1 more source
Mathematical Methods in the Applied Sciences, EarlyView.ABSTRACT We develop a unified mathematical framework extending classical moment theory from discrete integer orders to a continuous spectrum of real orders f>0$$ f>0 $$, providing a systematic statistical characterization of complex systems exhibiting power‐law behavior.
Farrukh A. Chishtie
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On Hankel and Inverse Hankel Determinants of Order Two for Some Subclasses of Analytic Functions
Symmetry, 2023 In view of the subclass SL*(β), which for β=0 reduces to the class SL*, two more subclasses CL(β) and GL(β) are introduced. For all these three subclasses, we investigate upper bounds of second Hankel and second inverse Hankel determinates. In most of the cases, the results are sharp.
Nehad Ali Shah +4 more
openaire +1 more source
An upper bound for third Hankel determinant of starlike functions connected with k-Fibonacci numbers
, 2019 In this paper, we investigate the third Hankel determinant problem in some classes of analytic functions in the open unit disc connected with k-Fibonacci numbers Fk,n(k>0). For this, first, we prove a conjecture, posed in Guney et al.
Guney, H. Ozlem +2 more
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Magnetic Resonance in Medicine, EarlyView.ABSTRACT Purpose To develop a slice‐wise blurring‐free and densely sampled TE‐resolved multiple‐TE (mTE) ASL sequence (TASL) for measuring blood–brain barrier (BBB) water exchange time. Methods A 3D TSE spiral‐readout pCASL sequence was modified to enable TE‐resolved acquisition.
Bo Li +11 more
wiley +1 more source
Frequency‐dependent contraction rates for the Bayesian method to the inverse source problem
Transactions 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
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