Results 111 to 120 of about 828 (215)

Direct Connection between the RII Chain and the Nonautonomous Discrete Modified KdV Lattice

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2013
The spectral transformation technique for symmetric RII polynomials is developed. Use of this technique reveals that the nonautonomous discrete modified KdV (nd-mKdV) lattice is directly connected with the RII chain.
Kazuki Maeda, Satoshi Tsujimoto
doaj   +1 more source

Hankel Determinant for a Class of Analytic Functions Related with Lemniscate of Bernoulli

open access: yesInternational Journal of Analysis and Applications, 2014
The object of the present investigation is to solve Fekete-Szegö problem and determine the sharp upper bound to the second Hankel determinant for a new class R of analytic functions in the unit disk.
Ashok Kumar Sahoo, Jagannath Patel
doaj   +2 more sources

Second Hankel determinant problem for k-bi-starlike functions

open access: yes, 2017
In this paper we introduce and study some properties of k-bi-starlike functions defined by making use of the S?l?gean derivative operator. Upper bounds on the second Hankel determinant for k-bi-starlike functions are investigated.
ORHAN, Halit   +5 more
core   +1 more source

Bounds for the Second Hankel Determinant and Its Inverse in Specific Function Classes

open access: yesAxioms
This paper presents a newly defined subclass of analytic functions and explores several significant properties within the class, which use for their definitions the q-analogues of the derivative and the subordinations. Thus, we tried to connect different
Trailokya Panigrahi   +2 more
doaj   +1 more source

A special class of Hankel determinants

open access: yes, 2013
This is an enlarged version of the original paper which contains some new material.
openaire   +2 more sources

Sharp Second-Order Hankel Determinants Bounds for Alpha-Convex Functions Connected with Modified Sigmoid Functions

open access: yesAxioms
The study of the Hankel determinant generated by the Maclaurin series of holomorphic functions belonging to particular classes of normalized univalent functions is one of the most significant problems in geometric function theory.
Muhammad Abbas   +3 more
doaj   +1 more source

On H3 (1) Hankel determinant for certain subclass of analytic functions

open access: yesExtracta Mathematicae, 2020
The objective of this paper is to obtain an upper bound to Hankel determinant of third order for any function f, when it belongs to certain subclass of analytic functions, defined on the open unit disc in the complex plane.
D. Vamshee Krishna, D. Shalini
doaj  

On a Subclass of Analytic Functions Related to a Hyperbola

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2014
The object of the present investigation is to solve Fekete-Szegö problem and determine the sharp upper bound to the second Hankel determinant for a new class ℛ̃(a,c,ρ) of analytic functions in the unit disk.
Jagannath Patel, Ashok Kumar Sahoo
doaj   +1 more source

Bounds for the second Hankel determinant of certain bi-univalent functions

open access: yes, 2016
We investigate the second Hankel determinant inequalities for a certain class of analytic and bi-univalent functions.
ORHAN, Halit   +2 more
core   +1 more source

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