DSpace@Çankaya

Yazar "Karapinar, Erdal" için Matematik Bölümü listeleme

Yazar "Karapinar, Erdal" 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 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 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 ...
  • Contraction in Rational Forms in the Framework of Super Metric Spaces 
    Karapinar, Erdal; Fulga, Andreea (2022-09)
    In this paper, we investigate contractions in a rational form in the context of the supermetric space, which is a very interesting generalization of the metric space. We consider an illustrative example to support this new ...
  • Controllability of Second Order Functional Random Differential Equations with Delay 
    Benchohra, Mouffak; Bouazzaoui, Fatima; Karapinar, Erdal; Salim, Abdelkrim (2022-04-01)
    In this article, we study some existence and controllability results for two classes of second order functional differential equations with delay and random effects. To begin, we employ a random fixed point theorem with a ...
  • Fixed Point Theorems For Mappings With A Contractive Iterate At A Point In Modular Metric Spaces 
    Karapinar, Erdal; Aksoy, Ümit; Fulga, Andreea; Erhan, İnci M. (2022)
    In this manuscript, we introduce two new types of contraction, namely, w-contraction and strong Sehgal w-contraction, in the framework of modular metric spaces. We indicate that under certain assumptions, such mappings ...
  • Neutral functional sequential differential equations with Caputo fractional derivative on time scales 
    Lazreg, Jamal Eddine; Benkhettou, Nadia; Benchohra, Mouffak; Karapinar, Erdal (2022-12)
    In this paper, we establish the existence and uniqueness of a solution for a class of initial value problems for implicit fractional differential equations with Caputo fractional derivative. The arguments are based upon ...
  • On Istrescu Type Contractions in b-Metric Spaces 
    Karapinar, Erdal; Fulga, Andreea; Petrusel, Adrian (2020-03)
    In this paper, we introduce the notions of alpha-almost Istrtescu contraction of type E and of type E in the setting of b-metric space. The existence of fixed points for such mappings is investigated and some examples to ...
  • On the boundary value problems of Hadamard fractional differential equations of variable order 
    Benkerrouche, Amar; Souid, Mohammed Said; Karapinar, Erdal; Hakem, Ali (2023-02)
    In this manuscript, we examine both the existence, uniqueness, and the stability of solutions to the boundary value problem (BVP) of Hadamard fractional differential equations of variable order by converting it into an ...
  • Sequences of Nonlinear Quasi Contractions and Fixed Points 
    Chi, Kieu Phuong; Karapinar, Erdal; Thanh, Tran Duc (2022)
    In this paper, we state some results on the relationship between the convergence of the nonlinear quasi-contractions and the convergence of their fixed point. The observed results certainly extend some existing results on ...
  • Super metric spaces 
    Karapinar, Erdal; Farshid, Khojasteh (2022-01)
    The aim of this paper is to propose a new generalization of metric space which may open a new framework. As an application, we consider the analog of Banach contraction mapping principle that works properly.