Results 121 to 130 of about 75,857 (270)

Planar maps as labeled mobiles

open access: yes, 2004
We extend Schaeffer's bijection between rooted quadrangulations and well-labeled trees to the general case of Eulerian planar maps with prescribed face valences, to obtain a bijection with a new class of labeled trees, which we call mobiles.
Bouttier, J.   +2 more
core   +4 more sources

Fibonacci Numbers Related to Some Subclasses of Bi‐Univalent Functions

open access: yesInternational Journal of Mathematics and Mathematical Sciences
This research paper introduces the novel subclass of bi‐univalent functions that are connected to Fibonacci numbers. Our main contributions in this study involve establishing constraints on the absolute values of the second coefficient |a2| and the third coefficient |a3| for functions within this specific subclass. In addition, we provide solutions to
Ala Amourah   +3 more
openaire   +2 more sources

Coefficient estimates for a certain subclass of bi-univalent functions

open access: yesLe Matematiche, 2016
Summary: In the present investigation, we find estimates on the coefficients \(|a_2|\) and \(|a_3|\) for functions in the function class \(S_\Sigma(\lambda,h)\). The results presented in this paper improve or generalize the recent work of \textit{N. Magesh} and \textit{J. Yamini} [Int. Math. Forum 8, No. 25--28, 1337--1344 (2013; Zbl 1283.30030)].
Yalcin, Sibel, Altınkaya, Şahsene
openaire   +2 more sources

Nevanlinna domains with large boundaries

open access: yes, 2018
We establish the existence of Nevanlinna domains with large boundaries. In particular, these domains can have boundaries of positive planar measure. The sets of accessible points can be of any Hausdorff dimension between $1$ and $2$.
Belov, Yurii   +2 more
core  

On some subclasses of m-fold symmetric bi-univalent functions

open access: yesCommunications Faculty Of Science University of Ankara Series A1Mathematics and Statistics, 2018
In this work, we introduce two new subclasses S_{{\Sigma}_{m}}({\alpha},{\lambda}) and S_{{\Sigma}_{m}}(\b{eta},{\lambda}) of {\Sigma}_{m} consisting of analytic and m-fold symmetric bi-univalent functions in the open unit disk U. Furthermore, for functions in each of the subclasses introduced in this paper, we obtain the coefficient bounds for |a_{m+1}
ALTINKAYA, Şahsene, YALÇIN, Sibel
openaire   +4 more sources

Coefficient Bounds for a General Subclass of Bi-Univalent Functions

open access: yesLe Matematiche, 2016
In the present investigation, we introduce and investigate a new subclass of the function class Sigma of bi-univalent functions defined in the open unit disc. We find estimates on the coefficients vertical bar a(2)vertical bar and vertical bar a(3)vertical bar for functions in the function class S-Sigma (n, h, lambda).
Yalcin, SİBEL, ALTINKAYA, ŞAHSENE
openaire   +2 more sources

Home - About - Disclaimer - Privacy