Results 21 to 30 of about 1,374,629 (297)

On Coefficient Functionals for Functions with Coefficients Bounded by 1 [PDF]

open access: yesMathematics, 2020
In this paper, we discuss two well-known coefficient functionals a 2 a 4 − a 3 2 and a 4 − a 2 a 3 . The first one is called the Hankel determinant of order 2. The second one is a special case of Zalcman functional. We consider them for functions in the class Q R ( 1 2 ) of analytic functions with real ...
Paweł Zaprawa   +2 more
openaire   +2 more sources

Bounding the Bogoliubov coefficients [PDF]

open access: yesAnnals of Physics, 2008
25 pages, plain ...
Boonserm, Petarpa, Visser, Matt
openaire   +3 more sources

On the Bounds of Coefficients of Daubechies Orthonormal Wavelets [PDF]

open access: yesMathematical Notes, 2020
In the present work we provide the bounds for Daubechies orthonormal wavelet coefficients for function spaces $\mathcal{A}_k^p:=\{f: \|(i ω)^k\hat{f}(ω)\|_p< \infty\}$, $k\in\mathbf{N}\cup\{0\}$, $p\in(1,\infty)$.
openaire   +2 more sources

Sharp Coefficients Bounds for Starlike Functions Associated with Gregory Coefficients

open access: yesComplex Analysis and Operator Theory, 2023
Abstract In this paper we introduced the class SG* of analytic functions which is related with starlike functions and generating functionof Gregory coefficients. By using bounds on some coefficient functionals for the family of functions with positive real part, we obtain several sharp coefficient bounds on the first six coeffcients and also ...
Sercan Kazımoğlu   +2 more
openaire   +2 more sources

Bounds for Hilbert coefficients [PDF]

open access: yesProceedings of the American Mathematical Society, 2008
We compute the Hilbert coefficients of a graded module with pure resolution and prove lower and upper bounds for these coefficients for arbitrary graded modules.
Herzog, Jürgen, Zheng, Xinxian
openaire   +1 more source

Computable lower bounds for deterministic parameter estimation [PDF]

open access: yes, 2007
This paper is primarily tutorial in nature and presents a simple approach(norm minimization under linear constraints) for deriving computable lower bounds on the MSE of deterministic parameter estimators with a clear interpretation of the bounds. We also
Chaumette, Eric   +7 more
core   +1 more source

Bounds for the coefficients of flow polynomials

open access: yesJournal of Combinatorial Theory, Series B, 2007
AbstractLet G be any connected bridgeless (n,m)-graph which may have loops and multiedges. It is known that the flow polynomial F(G,t) of G is a polynomial of degree m−n+1; F(G,t)=t−1 if m=n; and F(G,t)∈{(t−1)2,(t−1)(t−2)} if m=n+1. This paper shows that if m⩾n+2, then the absolute value of the coefficient of ti in the expansion of F(G,t) is bounded ...
Feng Ming Dong, Khee Meng Koh
openaire   +2 more sources

Good-deal bounds in a regime-switching diffusion market [PDF]

open access: yes, 2011
We consider option pricing in a regime-switching diffusion market. As the market is incomplete, there is no unique price for a derivative. We apply the good-deal pricing bounds idea to obtain ranges for the price of a derivative.
Catherine Donnelly, Donnelly, Catherine
core   +1 more source

Hankel Inequalities for a Subclass of Bi-Univalent Functions based on Salagean type q-Difference Operator

open access: yesJournal of Mathematical and Fundamental Sciences, 2020
In this investigation a new subclass of bi-univalent functions is established that is defined in the open unit disk Δ={𐌶 ∈ ℂ: |𐌶| < 1} and are endowed with the Sălăgean type q-difference operator.
Sibel Yalçın   +3 more
doaj   +1 more source

Certain Coefficient Estimate Problems for Three-Leaf-Type Starlike Functions

open access: yesFractal and Fractional, 2021
In our present investigation, some coefficient functionals for a subclass relating to starlike functions connected with three-leaf mappings were considered.
Lei Shi   +5 more
doaj   +1 more source

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