Results 11 to 20 of about 975 (221)

Belonging to convergence classes of Hadamard compositions of Gelfond-Leont'ev derivatives for analytic functions

Karpatsʹkì Matematičnì Publìkacìï, 2012
The conditions are found, under which the belonging to Valiron convergenceclass of entire functions $f$ and $g$ implies the belonging to thisclass of Gelfond-Leont'ev derivative of Hadamard compositionof functions $f$ and $g$ and of Hadamard composition ...
Mulyava O.M., Sheremeta M.M.
doaj   +4 more sources

Belonging to convergence classes of Hadamard compositions of Gelfond-Leont'ev derivatives for analytic functions

Karpatsʹkì Matematičnì Publìkacìï, 2013
The conditions are found, under which the belonging to Valiron convergence class of entire functions $f$ and $g$ implies the belonging to this class of Gelfond-Leont'ev derivative of Hadamard composition of functions $f$ and $g$ and of Hadamard ...
O. M. Mulyava, M. M. Sheremeta
doaj   +2 more sources

On composition of four-symbol 𝛿-codes and Hadamard matrices [PDF]

Proceedings of the American Mathematical Society, 1989
It is shown that key instruments for composition of four-symbol δ \delta
C. H. Yang
openaire   +3 more sources

Some Interesting Inequalities for the Class of Generalized Convex Functions of Higher Order

Journal of Function Spaces, 2023
In this paper, we study a generalized version of strongly reciprocally convex functions of higher order. Firstly, we prove some basic properties for addition, scalar multiplication, and composition of functions.
Limei Liu, Muhammad Shoaib Saleem, Faisal Yasin, Kiran Naseem Aslam, Pengfei Wang   +4 more
doaj   +2 more sources

A Characterization of Generalized Boolean Functions Employed in CDMA Communications [PDF]

International Journal of Mathematical, Engineering and Management Sciences
In design of secure cryptosystems and CDMA communications, the negabent functions play a significant role. The generalized Boolean functions have been extensively studied by Schmidt and established several important results in this setup.
Deep Singh, Anjali Chawla, Pramod Bhogta, Amit Paul   +3 more
doaj   +2 more sources

Relative growth of Hadamard compositions of series in systems of functions [PDF]

Electronic Journal of Mathematics
Myroslav M. Sheremeta
doaj   +2 more sources

Pseudostarlikeness and Pseudoconvexity of Multiple Dirichlet Series

Universal Journal of Mathematics and Applications, 2023
Let $p\in {\Bbb N}$, $s=(s_1,\ldots,s_p)\in {\Bbb C}^p$, $h=(h_1,\ldots,h_p)\in {\Bbb R}^p_+$, $(n)=(n_1,\ldots,n_p)\in {\Bbb N}^p$ and the sequences $\lambda_{(n)}=(\lambda^{(1)}_{n_1},\ldots,\lambda^{(p)}_{n_p})$ are such that $0<\lambda^{(j)}_1 ...
Myroslav Sheremeta
doaj   +1 more source

STABILITY-PRESERVING PERTURBATION OF THE MAXIMAL TERMS OF DIRICHLET SERIES

Проблемы анализа, 2022
We study stability of the maximal term of the Dirichlet series with positive exponents, the sum of which is an entire function. This problem is of interest, because the Leont’ev formulas for coefficients calculated using a biorthogonal system of ...
A. M. Gaisin, N. N. Aitkuzhina
doaj   +1 more source

Differential Subordination and Superordination of Multivalent Functions Involving Differential Operator

Al-Mustansiriyah Journal of Science, 2021
In the present work, we derive some properties of subordination and superordination results associated with the Hadamard product concept involving the composition of the differential operator.
Huda Fawzi Isawi, Abdul Rahman S. Juma
doaj   +1 more source

Boundary value problems for Caputo-Hadamard fractional differential inclusions in Banach spaces [PDF]

, 2022
summary:In this article, we study the existence of solutions in a Banach space of boundary value problems for Caputo-Hadamard fractional differential inclusions of order $r \in (0,1]$
Hammou, Amouria, Henderson, Johnny, Hamani, Samira   +2 more
core   +1 more source