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Now showing 1 - 10 of 32
  • Article
    Citation - WoS: 29
    Citation - Scopus: 42
    Mixed g-monotone Property and Quadruple Fixed Point Theorems in Partially Ordered Metric Spaces
    (Springer international Publishing Ag, 2012) Mustafa, Zead; Aydi, Hassen; Karapinar, Erdal
    In this manuscript, we prove some quadruple coincidence and common fixed point theorems for F : X-4 -> X and g : X -> X satisfying generalized contractions in partially ordered metric spaces. Our results unify, generalize and complement various known results from the current literature. Also, an application to matrix equations is given.
  • Article
    Citation - WoS: 20
    Citation - Scopus: 49
    Coupled Coincidence Points in Partially Ordered Cone Metric Spaces With a c-distance
    (Hindawi Ltd, 2012) Shatanawi, Wasfi; Karapinar, Erdal; Aydi, Hassen
    Cho et al. (2012) proved some coupled fixed point theorems in partially ordered cone metric spaces by using the concept of a c-distance in cone metric spaces. In this paper, we prove some coincidence point theorems in partially ordered cone metric spaces by using the notion of a c-distance. Our results generalize several well-known comparable results in the literature. Also, we introduce an example to support the usability of our results.
  • Article
    Citation - WoS: 31
    Citation - Scopus: 36
    New Meir-Keeler Type Tripled Fixed-Point Theorems on Ordered Partial Metric Spaces
    (Hindawi Ltd, 2012) Aydi, Hassen; Karapinar, Erdal
    In this paper, we prove some new Meir-Keeler type tripled fixed-point theorems on a partially ordered complete partial metric space. Also, as application, some results of integral type are given.
  • Article
    Citation - WoS: 43
    Coupled Fixed Points for Meir-Keeler Contractions in Ordered Partial Metric Spaces
    (Hindawi Ltd, 2012) Abdeljawad, Thabet; Aydi, Hassen; Karapinar, Erdal
    In this paper, we prove the existence and uniqueness of a new Meir-Keeler type coupled fixed point theorem for two mappings F : X x X -> X and g : X -> X on a partially ordered partial metric space. We present an application to illustrate our obtained results. Further, we remark that the metric case of our results proved recently in Gordji et al. (2012) have gaps. Therefore, our results revise and generalize some of those presented in Gordji et al. (2012)
  • Editorial
    Advances on Multivalued Operators and Related Fixed Point Problems
    (Hindawi Publishing Corporation, 2014) Chen, Chi-Ming; Karapinar, Erdal; Du, Wei-Shih; Aydi, Hassen; Romaguera, Salvador
    [No Abstract Available]
  • Article
    Citation - WoS: 63
    Citation - Scopus: 78
    Fixed Points for Generalized (α, Ψ)-Contractions on Generalized Metric Spaces
    (Springeropen, 2014) Aydi, Hassen; Karapinar, Erdal; Samet, Bessem
    In this paper, we introduce some generalized (alpha, psi)-contractive mappings in the setting of generalized metric spaces and, based on the very recent paper (Kirk and Shahzad in Fixed Point Theory Appl. 2013:129, 2013), we omit the Hausdorff hypothesis to prove some fixed point results involving such mappings. Some consequences on existing fixed point theorems are also derived.
  • Article
    Citation - WoS: 23
    Citation - Scopus: 32
    Berinde-Type Generalized Contractions on Partial Metric Spaces
    (Hindawi Ltd, 2013) Aydi, Hassen; Amor, Sana Hadj; Karapinar, Erdal
    We consider generalized Berinde-type contractions in the context of partial metric spaces. Such contractions are also known as generalized almost contractions in the literature. In this paper, we extend, generalize, and enrich the results in this direction. Some examples are presented to illustrate our results.
  • Article
    Citation - WoS: 172
    Citation - Scopus: 190
    Interpolative Reich-Rus Type Contractions on Partial Metric Spaces
    (Mdpi, 2018) Karapinar, Erdal; Agarwal, Ravi; Aydi, Hassen
    By giving a counter-example, we point out a gap in the paper by Karapinar (Adv. Theory Nonlinear Anal. Its Appl. 2018, 2, 85-87) where the given fixed point may be not unique and we present the corrected version. We also state the celebrated fixed point theorem of Reich-Rus-Ciric in the framework of complete partial metric spaces, by taking the interpolation theory into account. Some examples are provided where the main result in papers by Reich (Can. Math. Bull. 1971, 14, 121-124; Boll. Unione Mat. Ital. 1972, 4, 26-42 and Boll. Unione Mat. Ital. 1971, 4, 1-11.) is not applicable.
  • Article
    Citation - WoS: 51
    Citation - Scopus: 57
    Tripled Coincidence Point Results for Generalized Contractions in Ordered Generalized Metric Spaces
    (Springer international Publishing Ag, 2012) Aydi, Hassen; Karapinar, Erdal; Shatanawi, Wasfi
    In this paper, we establish some tripled coincidence point results for a mixed g-monotone mapping F : X (3) -> X satisfying (psi, I center dot)-contractions in ordered generalized metric spaces. Also, an application and some examples are given to support our results.
  • Article
    Citation - WoS: 37
    Citation - Scopus: 49
    A Meir-Keeler Common Type Fixed Point Theorem on Partial Metric Spaces
    (Springer int Publ Ag, 2012) Aydi, Hassen; Karapinar, Erdal
    In this article, we prove a general common fixed point theorem for two pairs of weakly compatible self-mappings of a partial metric space satisfying a generalized Meir-Keeler type contractive condition. The presented theorem extends several well known results in literature.