Results 41 to 50 of about 101,039,394 (126)

An Arclength Problem for Close-to-Convex Functions [PDF]

open access: yesJournal of the London Mathematical Society, 1964
Peer Reviewed ; http://deepblue.lib.umich.edu/bitstream/2027.42/135158/1/jlms0757 ...
openaire   +2 more sources

The Third Logarithmic Coefficient for Certain Close-to-Convex Functions

open access: yesJournal of Mathematics, 2022
The logarithmic coefficients γn of a normalized analytic functions f are defined by log  fz/z=2∑n=1∞γnzn. For certain close-to-convex functions fz=z+a2z2+⋯, Cho et al. (on the third logarithmic coefficient in some subclasses of close-to-convex functions)
Najla M. Alarifi
doaj   +1 more source

Length problems for Bazilevič functions

open access: yesDemonstratio Mathematica, 2019
Let C(r) denote the curve which is image of the circle |z| = r < 1 under the mapping f . Let L(r) be the length of C(r) and A(r) the area enclosed by the curve C(r).
Nunokawa Mamoru   +2 more
doaj   +1 more source

On certain subclass of close-to-convex functions

open access: yesProceedings of the Japan Academy, Series A, Mathematical Sciences, 1988
Let \(A_ n\) denote the class of regular functions such that \[ f(z)=z+\sum^{\infty}_{k=n+1}a_ kz^ k\quad (n=1,2,...)\quad (| z|
Owa, Shigeyoshi, Ma, Wancang
openaire   +2 more sources

Applications of q-Bessel-Struve Functions on Univalent Functions

open access: yesMathematics
In this paper, the authors derived some new sufficient conditions for q-close-to-convexity with respect to certain functions involving three different normalizations of q-Bessel–Struve functions.
Saddaf Noreen   +5 more
doaj   +1 more source

Some Reciprocal Classes of Close-to-Convex and Quasi-Convex Analytic Functions

open access: yesMathematics, 2019
The present paper comprises the study of certain functions which are analytic and defined in terms of reciprocal function. The reciprocal classes of close-to-convex functions and quasi-convex functions are defined and studied.
Shahid Mahmood   +3 more
doaj   +1 more source

Coefficient Problems for Certain Close-to-Convex Functions

open access: yesBulletin of the Iranian Mathematical Society, 2023
In this paper, sharp bounds are established for the second Hankel determinant of logarithmic coefficients for normalised analytic functions satisfying certain differential inequality.
Mundalia, Mridula   +1 more
openaire   +3 more sources

On the Hankel determinants of close-to-convex univalent functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1980
The rate of growth of Hankel determinant for close-to-convex functions is determined. The results in this paper are best possible.
K. Inayat Noor
doaj   +1 more source

New Criteria for Meromorphic Starlikeness and Close-to-Convexity

open access: yesMathematics, 2020
The main purpose of current paper is to obtain some new criteria for meromorphic strongly starlike functions of order α and strongly close-to-convexity of order α .
Ali Ebadian   +3 more
doaj   +1 more source

A new subclass of close-to-convex functions [PDF]

open access: yesSurveys in Mathematics and its Applications, 2016
In this work, we introduce and investigate an interesting subclass Xt(γ) of analytic and close-to-convex functions in the open unit disk U. For functions belonging to the class Xt(γ), we drive several properties including coefficient estimates ...
J. K. Prajapat
doaj  

Home - About - Disclaimer - Privacy