Browsing by Subject "generalized contractions"

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    • Fixed points of conditionally f-contractions in complete metric-like spaces 

      Karapınar, Erdal; Kutbi, Marwan A; Piri, Hossein; O’Regan, Donal (Springer Nature, 2015-07-23)
      In this paper, we introduce the notion of a conditionally F-contraction in the setting of complete metric-like spaces and we investigate the existence of fixed points of such mappings. Our results unify, extend, and improve ...

    • On the existence of fixed points that belong to the zero set of a certain function 

      Karapinar, Erdal; O’Regan, Donal; Samet, Bessem (Springer Nature, 2015-08-25)
      Let T : X -> X be a given operator and F-T be the set of its fixed points. For a certain function phi : X -> [0,infinity), we say that F-T is phi-admissible if F-T is nonempty and F-T subset of Z(phi), where ...