Zobrazeno 1 - 10
of 74
pro vyhledávání: '"Sh. Najafzadeh"'
Publikováno v:
Surveys in Mathematics and its Applications, Vol 18 (2023), Pp 259-272 (2023)
In this paper, we consider the class of normalized analytic functions of the form f(z)=z+∑n=2∞ anzn. Following this functions, we define the functions whose coefficients are probabilities of the geometric distribution series and other special mod
Externí odkaz:
https://doaj.org/article/3821c44d56034286a648d2a1533957d8
Univalent holomorphic functions associated with the Bessel function based on subordination structure
Publikováno v:
Surveys in Mathematics and its Applications, Vol 17 (2022), Pp 333-343 (2022)
By considering the Bessel functions of the first kind of order ν and convolution structure, a new subclass of univalent holomorphic functions based of differential subordination is defined. Some geometric properties related to coefficient estimate,
Externí odkaz:
https://doaj.org/article/36cb7e68653243249b0787471c53cd38
Publikováno v:
International Journal of Analysis and Applications, Vol 18, Iss 2, Pp 254-261 (2020)
The theory of q–calculus operators are applied in many areas of sciences such as complex analysis. In this paper we apply S˘al˘agean q–differential operator to harmonic functions and introduce sharp coefficient bounds, extreme points, distortio
Externí odkaz:
https://doaj.org/article/c686695f7fba421b93bc663ce41b3d82
Autor:
Sh. Najafzadeh, Mugur Acu
Publikováno v:
Journal of Function Spaces, Vol 2022 (2022)
The motivation of the present paper is to define a new subclass of univalent functions associated with the q-analogue of the exponential function and the well-known Bell numbers based on subordination structure. Furthermore, we estimate the coefficie
Externí odkaz:
https://doaj.org/article/a5d0880b549a4fdbac79725f18faa28e
Autor:
Sh. Najafzadeh, Z. Salleh
Publikováno v:
Journal of Function Spaces, Vol 2022 (2022)
The primary motivation of the paper is to define a new class Chδα,β,γ which consists of univalent functions associated with Chebyshev polynomials. For this class, we determine the coefficient bound and convolution preserving property. Furthermore
Externí odkaz:
https://doaj.org/article/dc159d0d450c4915b3171c647fdcee71
Univalent functions related to q–analogue of generalized M–series with respect to k–symmetric points
Autor:
Sh. Najafzadeh
Publikováno v:
Surveys in Mathematics and its Applications, Vol 14 (2019), Pp 277-285 (2019)
n this paper, we introduce subclasses of analytic functions by using q-analogue of generalized M-series and k-symmetric points. Some special coefficient inequalities are also discussed.
Externí odkaz:
https://doaj.org/article/8b665559ee75431c857c7c169a1aebd6
Autor:
Sh. Najafzadeh
Publikováno v:
Surveys in Mathematics and its Applications, Vol 14 (2019), Pp 149-158 (2019)
In this article, two subfamilies of p-valent meromorphic functions by means of q-derivative are defined. With that, we study coefficient inequality, distortion bounds and convex family of these subclasses. Also connected sets structure is investigate
Externí odkaz:
https://doaj.org/article/9ce90bb51ecd4805b26b944de473050b
Publikováno v:
International Journal of Analysis and Applications, Vol 16, Iss 1, Pp 62-74 (2018)
Controlled frames have been introduced to improve the numerical efficiency of iterative algorithms for inverting the frame operator. Also K-frames have been introduced to study atomic systems with respect to bounded linear operator. In this paper, th
Externí odkaz:
https://doaj.org/article/260d9128e2fa40b68f72749ae16d9831
Autor:
SH NAJAFZADEH, ZABIDIN SALLEH
Publikováno v:
Journal of Mathematical Sciences and Informatics. 2:59-64
The main purpose of this article is to derive the connections between the parabolic starlike and parabolic uniformly convex functions by applying an integral operator on multivalent functions. In addition, a parabolic region in the half-plane is intr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ccb49db4fa85388dfb553e1ecafc8db5
https://doi.org/10.46754/jmsi.2022.06.006
https://doi.org/10.46754/jmsi.2022.06.006
Publikováno v:
Applied Mathematics-A Journal of Chinese Universities. 36:354-369
This paper investigates the nonlinear boundary value problem resulting from the exact reduction of the Navier-Stokes equations for unsteady magnetohydrodynamic boundary layer flow over the stretching/shrinking permeable sheet submerged in a moving fl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e24d7ba5026197a34a609bee185d3a09
https://doi.org/10.1007/s11766-021-3761-2
https://doi.org/10.1007/s11766-021-3761-2