Ümit Aksoy

Aksoy, Ümit

Profile URL

https://hdl.handle.net/20.500.14411/6803

Name Variants

U., Aksoy
A., Umit
Ü., Aksoy
Aksoy,U.
Aksoy,Umit
Aksoy, Umit
Umit, Aksoy
U.,Aksoy
Ü.,Aksoy
Ümit Aksoy
A.,Umit
Aksoy U.
Aksoy, Ümit
Aksoy,Ü.
Ümit, Aksoy
A., Ümit
A.,Ümit
Aksoy, U.
Aksoy, Ue.
Aksoy, Ue

Job Title

Profesör Doktor

Email Address

umit.aksoy@atilim.edu.tr

Main Affiliation

Mathematics

Scopus Author ID

24402879000

Full item page

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Scholarly Output

43

Articles

34

Views / Downloads

74/59

Supervised MSc Theses

2

Supervised PhD Theses

0

WoS Citation Count

732

Scopus Citation Count

716

Patents

0

Projects

0

WoS Citations per Publication

17.02

Scopus Citations per Publication

16.65

Open Access Source

6

Supervised Theses

2

Journal	Count
Complex Variables and Elliptic Equations	6
Filomat	3
Applied and Computational Mathematics	2
Integral Transforms and Special Functions	2
Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A. Matemáticas	2

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Scopus Quartile Distribution

Competency Cloud

Scholarly Output Search Results

Now showing 1 - 10 of 28

Neumann problem for generalized n-Poisson equation
(Journal of Mathematical Analysis and Applications, 2009) Aksoy, Ümit; Çelebi, Okay
Using a hierarchy of integral operators having higher-order Neumann functions and their derivatives as kernels, the Neumann problem for a 2nth order linear partial complex differential equation is discussed. The solvability of the problem is obtained.
A Hierarchy of Singular Integral Operators for Mixed Boundary Value Problems
(2011) Aksoy, Ümit; Çelebi, Okay
A class of integral operators having a hierarchy of polyharmonic kernels is introduced and some properties are derived. Iterated mixed boundary value problems for complex model equations and linear elliptic complex partial differential equations are discussed in the unit disc of the complex plane.
Mixed Boundary Value Problems for Higher-Order Complex Partial Differential Equations
(Univ Simon Bolivar, 2010) Aksoy,U.; Okay Ĉedil,; elebi,A.; Celebi, Ahmet Okay; Ĉedil, Okay
In this paper, we introduce the operators related to mixed boundary value problems for general linear elliptic partial complex differential equations in the unit disc of the complex plane. The solvability of the relevant boundary value problems will be studied by transforming them into singular integral equations. © 2010, by Oldenbourg Wissenschaftsverlag, München, Germany. All rights reserved.
Citation - WoS: 7
Citation - Scopus: 9
Norm Estimates of a Class of Calderon-Zygmund Type Strongly Singular Integral Operators
(Taylor & Francis Ltd, 2007) Aksoy, Ue; Celebi, A. O.; Elebi, A.O.
In this article, we prove the L-p boundedness of a class of Calderon - Zygmund type strongly singular operators. In particular, we give an estimate for the L-2 norm of these operators in the unit disc of the complex plane.
Citation - WoS: 14
Citation - Scopus: 19
Neumann problem for generalized n-Poisson equation
(Academic Press inc Elsevier Science, 2009) Aksoy, Ue.; Celebi, A. O.
Using a hierarchy of integral operators having higher-order Neumann functions and their derivatives as kernels, the Neumann problem for a 2nth order linear partial complex differential equation is discussed. The solvability of the problem is obtained. (C) 2009 Elsevier Inc. All rights reserved.
Citation - WoS: 28
Citation - Scopus: 31
Meir-Keeler Type Contractions on Modular Metric Spaces
(Univ Nis, Fac Sci Math, 2018) Aksoy, Umit; Karapinar, Erdal; Erhan, Inci M.; Rakocevic, Vladimir
In this paper we introduce contraction mappings of Meir-Keeler types on modular metric spaces and investigate the existence and uniqueness of their fixed points. We give an example which demonstrates our theoretical results.
Citation - WoS: 25
Citation - Scopus: 33
Fixed Point Theorems in Complete Modular Metric Spaces and an Application To Anti-Periodic Boundary Value Problems
(Univ Nis, Fac Sci Math, 2017) Aksoy, Umit; Karapinar, Erdal; Erhan, Inci M.
In this paper existence and uniqueness of fixed points for a general class of contractive and nonexpansive mappings on modular metric spaces is discussed. As an application of the theoretical results, the existence of a solution of anti-periodic boundary value problems for nonlinear first order differential equations of Caratheodory's type is considered in the framework of modular metric spaces.
Citation - WoS: 69
FIXED POINTS OF GENERALIZED α-ADMISSIBLE CONTRACTIONS ON b-METRIC SPACES WITH AN APPLICATION TO BOUNDARY VALUE PROBLEMS
(Yokohama Publ, 2016) Aksoy, Umit; Karapinar, Erdal; Erhan, Inci M.
A general class of alpha-admissible contractions defined via (b)-comparison functions on b-metric spaces is discussed. Existence and uniqueness of the fixed point for this class of contractions is studied. Some consequences are presented. The results are employed in the discussion of existence and uniqueness of solutions of first order boundary value problems for ordinary differential equations.
Citation - WoS: 17
Citation - Scopus: 18
Weak Ψ-Contractions on Partially Ordered Metric Spaces and Applications To Boundary Value Problems
(Springeropen, 2014) Karapinar, Erdal; Erhan, Inci M.; Aksoy, Umit
A class of weak psi-contractions satisfying the C-condition is defined on metric spaces. The existence and uniqueness of fixed points of such maps are discussed both on metric spaces and on partially ordered metric spaces. The results are applied to a first order periodic boundary value problem.
Analysis of the Parameters That Effects the Operating Frequencies and Bandwidth of a Cpw-Fed Patch Antenna
(Ieee, 2013) Dagdeviren, Birkan; Kapusuz, K. Yavuz; Can, Sultan; Aydin, Elif
In this study, the analysis of the effect of antenna parameters to the operating frequency is performed in a coplanar waveguide fed patch antenna. The effect of the size and the substrate of the design dual frequency antenna to the operating frequency and bandwidth are also evaluated. Bandwidth of the upper and lower frequency is also investigated and results are demonstrated. The method to increase the bandwidth is also presented by using the chosen parameters.