Results 11 to 20 of about 2,859 (232)

Hankel and Toeplitz Determinants for q-Starlike Functions Involving a q-Analog Integral Operator and q-Exponential Function

open access: yesJournal of Function Spaces
This article investigates the upper bounds of the second Hankel and Toeplitz determinants for a family of q-starlike functions defined by a q-analog integral operator, which is a more general form of the q-Srivastava-Attiya operator, and the q ...
Sarem H. Hadi   +2 more
doaj   +2 more sources

Quantitative Analysis of Polymers by MALDI-TOF Mass Spectrometry: Correlation Between Signal Intensity and Arm Number. [PDF]

open access: yesJ Mass Spectrom
ABSTRACT The signal intensities of linear and star‐shaped poly(L‐lactides) (PLA) and poly (ethylene oxides) (PEO) were compared to determine the influence of the number of arms on the ionization in matrix‐assisted laser desorption/ionization time‐of‐flight (MALDI‐TOF) mass spectrometry. In this study, a variety of blends were prepared and investigated,
Dalgic MS, Kumar S, Weidner SM.
europepmc   +2 more sources

On norm estimation for certain subclasses of analytic functions in geometric functions theory [PDF]

open access: yesJournal of Mahani Mathematical Research, 2023
We investigate on some subclasses of analytic fuctions defined by subordination. Also, we give estimates of $\sup_{|z|
Hormoz Rahmatan
doaj   +1 more source

Fourth Hankel Determinant for a Subclass of Starlike Functions Based on Modified Sigmoid

open access: yesJournal of Function Spaces, 2021
In our present investigation, we obtain the improved third-order Hankel determinant for a class of starlike functions connected with modified sigmoid functions.
Wali Khan Mashwani   +6 more
doaj   +1 more source

A New Measure of Quantum Starlike Functions Connected with Julia Functions

open access: yesJournal of Function Spaces, 2022
In a complex domain, the investigation of the quantum differential subordinations for starlike functions is newly considered by few research studies. In this note, we arrange a set of necessary conditions utilizing the concept of the quantum differential
Samir B. Hadid   +2 more
doaj   +1 more source

Starlike functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1974
Let S ∗ [ α ] {\mathcal {S}^\ast }[\alpha ] denote the class of functions f ( z ) = z + ∑ n = 2 ∞
openaire   +1 more source

On a subclass of starlike functions associated with a vertical strip domain

open access: yesJournal of Inequalities and Applications, 2019
In this paper, we consider a subclass of starlike functions associated with a vertical strip domain. We obtain several results concerned with integral representations, convolutions, and coefficient inequalities for functions belonging to this class ...
Yong Sun   +3 more
doaj   +1 more source

Third Hankel Determinant for the Logarithmic Coefficients of Starlike Functions Associated with Sine Function

open access: yesFractal and Fractional, 2022
The logarithmic functions have been used in a verity of areas of mathematics and other sciences. As far as we know, no one has used the coefficients of logarithmic functions to determine the bounds for the third Hankel determinant.
Bilal Khan   +3 more
doaj   +1 more source

Starlike Meromorphic Functions [PDF]

open access: yesProceedings of the American Mathematical Society, 1972
In this paper we study meromorphic univalent functions which map the unit disk onto the exterior of a domain which is starlike with respect to some finite point different from the origin. We obtain bounds on the arc length, an integral representation, and bounds on the maximum modulus of starlike meromorphic functions.
openaire   +2 more sources

Starlikeness Associated with Tangent Hyperbolic Function

open access: yesJournal of Function Spaces, 2022
The primary objective of this study is to establish a class of starlike functions (symmetric under rotation) that are related to a tangent hyperbolic.
Huo Tang   +5 more
doaj   +1 more source

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