• New results on F-contractions in complete metric spaces 

      Vujaković, Jelena; Kontrec, Nataša; Tošić, Marina; Fabiano, Nicola; Radenović, Stojan (MDPI (Basel, Switzerland), 2021-12-21)
      The main purpose of this paper is to improve, generalize, unify, extend and enrich the recent results established by Dung and Hang (2015), Piri and Kumam (2014, 2016), and Singh et al. (2018). In our proofs, we only use ...
    • On Some New Contractive Conditions in Complete Metric Spaces 

      Vujaković, Jelena; Ljajko, Eugen; Pavlović, Mirjana; Radenović, Stojan (MDPI (Basel, Switzerland), 2021-01-07)
      One of the main goals of this paper is to obtain new contractive conditions using the method of a strictly increasing mapping F:(0,+∞)→(−∞,+∞). According to the recently obtained results, this was possible (Wardowski’s ...