DSpace@Çankaya

Yazar "19184" için Matematik Bölümü listeleme

Yazar "19184" için Matematik Bölümü listeleme

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  • A Brief Overview and Survey of the Scientific Work by Feng Qi 
    Agarwal, Ravi Prakash; Karapinar, Erdal; Kostić, Marko; Cao, Jian; Du, Wei-Shih (2022-08)
    In the paper, the authors present a brief overview and survey of the scientific work by Chinese mathematician Feng Qi and his coauthors.
  • A common fixed point theorem of a Gregus type on convex cone metric spaces 
    Abdeljawad, Thabet; Karapınar, Erdal (Eudoxus Press, 2011-05)
    The result of Ciric [1] on a common fixed point theorem of Gregus-type on metric spaces is extended to the class of cone metric spaces. Namely, a common fixed point theorem is proved in s-convex cone metric spaces under ...
  • A common fixed point theorem of a Greguš type on convex cone metric spaces 
    Abdeljawad, Thabet; Karapinar, Erdal (2011)
    The result of Ćirić [1] on a common fixed point theorem of Greguš type on metric spaces is extended to the class of cone metric spaces. Namely, a common fixed point theorem is proved in s-convex cone metric spaces under ...
  • A discussion on a generalized Geraghty multi-valued mappings and applications 
    Afshari, Hojjat; Atapour, Maryam; Karapınar, Erdal (2020-07-14)
    This research intends to investigate the existence results for both coincidence points and common fixed point of generalized Geraghty multi-valued mappings endowed with a directed graph. The proven results are supported ...
  • A discussion on a pata type contraction via iterate at a point 
    Karapınar, Erdal; Fulga, Andreea; Rakočević, Vladimir (2020)
    In this paper, we introduce the notion of Pata type contraction at a point in the context of a complete metric space. We observe that such contractions possesses unique fixed point without continuity assumption on the given ...
  • A Discussion on p-Geraghty Contraction on mw-Quasi-Metric Spaces 
    Alegre, Carme; Fulga, Andreea; Karapınar, Erdal; Tirado, Pedro (2020-09)
    In this paper we consider a kind of Geraghty contractions by using mw-distances in the setting of complete quasi-metric spaces. We provide fixed point theorems for this type of mappings and illustrate with some examples ...
  • A Discussion On Random Meir-Keeler Contractions 
    Li, Cheng-Yen; Karapınar, Erdal; Chen, Chi-Ming (MDPI AG, 2020-02-01)
    The aim of this paper is to enrich random fixed point theory, which is one of the cornerstones of probabilistic functional analysis. In this paper, we introduce the notions of random, comparable MT-g contraction and random, ...
  • A discussion on the coincidence quasi-best proximity points 
    Fouladi, Farhad; Abkar, Ali; Karapınar, Erdal (2021)
    In this paper, we first introduce a new class of the pointwise cyclic-noncyclic proximal contraction pairs. Then we consider the coincidence quasi-best proximity point problem for this class. Finally, we study the coincidence ...
  • A Discussion On the Existence of Best Proximity Points That Belong to the Zero Set 
    Karapınar, Erdal; Abbas, Mujahid; Farooq, Sadia (MDPI AG, 2020-03-01)
    In this paper, we investigate the existence of best proximity points that belong to the zero set for the αp-admissible weak (F, ϕ)-proximal contraction in the setting of M-metric spaces. For this purpose, we establish ...
  • A discussion on the existence of positive solutions of the boundary value problems via ψ-Hilfer fractional derivative on b-metric spaces 
    Afshari, Hojjat; Karapınar, Erdal (2020-12-01)
    In this paper, we investigate the existence of positive solutions for the new class of boundary value problems via ψ-Hilfer fractional differential equations. For our purpose, we use the α− ψ Geraghty-type contraction in ...
  • A Fixed Point Theorem and an Application for the Cauchy Problem in the Scale of Banach Spaces 
    Tri, Vo Viet; Karapınar, Erdal (2020)
    The main aim of this paper is to prove the existence of the fixed point of the sum of two operators in setting of the cone-normed spaces with the values of cone-norm belonging to an ordered locally convex space. We apply ...
  • A fixed point theorem for a system of Pachpatte operator equations 
    Karapınar, Erdal; Öztürk, Ali; Rakocevic, Vladimir (2021-04)
    In this paper, we investigate sufficient conditions for the existence of solutions to the system {Tx=x, alpha(i)(x)=0(E), i = 1,2, ... r, where 0(E) is the zero vector of E, and alpha(i) : E -> E i = 1, 2, ... , r ...
  • A fixed point theorem for Proinov mappings with a contractive iterate 
    Karapınar, Erdal; Fulga, Andreea (2023-09)
    In this paper, we consider the fixed point theorem for Proinov mappings with a contractive iterate at a point. In other words, we combine and unify the basic approaches of Proinov and Sehgal in the framework of the complete ...
  • A fixed point theorem without a Picard operator 
    Karapınar, Erdal (2021)
    In this short note, we propose a fixed point theorem in the setting of a Banach space without using a Picard operator. © 2021, Cankaya University. All rights reserved.
  • A generalized contraction principle with control functions on partial metric spaces 
    Abdeljawad, Thabet; Karapınar, Erdal; Taş, Kenan (Pergamon-Elsevier Science Ltd, 2012-02)
    Partial metric spaces were introduced by Matthews in 1994 as a part of the study of denotational semantics of data flow networks. In this article, we prove a generalized contraction principle with control functions phi and ...
  • A New Generalization of M-Metric Space With Some Fixed Point Theorems 
    Karapınar, Erdal; Roy, Kushal; Saha, Mantu (2021)
    In this paper, we introduce a new sequential space as a generalization of M-metric spaces and M-b-metric spaces. In this generalized space we define two contractive mappings namely m-contraction and m-quasi-contraction and ...
  • A Note on the Gornicki-Proinov Type Contraction 
    Karapinar, Erdal; De La Sen, Manuel; Fulga, Andreea (2021-01-28)
    In this paper, we propose a notion of the Gornicki-Proinov type contraction. Then, we prove the uniqueness and existence of the fixed point for such mappings in the framework of the complete metric spaces. Some illustrative ...
  • A Result on a Pata-Ciri Type Contraction at a Point 
    Karapınar, Erdal; Fulga, Andreea; Rakocevic, Vladimir (2020-03)
    In this manuscript, we define a new contraction mapping, Pata-Ciri type contraction at a point, that merges distinct contractions defined by Seghal, Pata and Ciri. We proved that in a complete space, each Pata-Ciri type ...
  • A Result On A Pata-Ciric Type Contraction At A Point 
    Karapınar, Erdal; Fulga, Andreea; Rakoˇcevi´c, Vladimir (MDPI AG, 2020-03-01)
    In this manuscript, we define a new contraction mapping, Pata-Cirictype contraction at a point, that merges distinct contractions defined by Seghal, Pata and Ciric. We proved that in a complete space, each Pata-Cirictype ...
  • A solution of the fractional differential equations in the setting of b-metric space 
    Afshari, H.; Karapınar, E. (2021-12-30)
    In this paper, we study the existence of solutions for the following differential equations by using a fixed point theorems (formula presented) where Dμ, Dν is the Caputo derivative of order μ, ν, respectively and h: J × ...