Yazar "Durmaz, Gonca" için Makale Koleksiyonu listeleme
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Fixed Point Results for α-ψ-Contractive Mappings Including Almost Contractions and Applications
Durmaz, Gonca; Minak, Gulhan; Altun, Ishak (Hindawi Publishing Corp, 2014)In the recent paper (B. Samet, C. Vetro, and P. Vetro, Fixed point theorems for alpha-psi-contractive type mappings, Nonlinear Analysis. Theory, Methods and Applications, 75 (2012), 2154-2165.), the authors introduced the ... -
Fixed points of ordered F-contractions
Durmaz, Gonca; Minak, Gulhan; Altun, Ishak (Hacettepe Univ, Fac Sci, 2016)In his recent paper, Wardowski [16] introduced the concept of F-contraction, which is a proper generalization of ordinary contraction on a complete metric space. Then, some generalizations of F-contractions including ... -
Multivalued Almost F-contractions on Complete Metric Spaces
Altun, Ishak; Durmaz, Gonca; Minak, Gulhan; Romaguera, Salvador (Univ Nis, Fac Sci Math, 2016)In the present paper, considering a new concept of multivalued almost F-contraction, we give a general class of multivalued weakly Picard operators on complete metric spaces. Also, we give some illustrative examples showing ... -
A New Perspective For Multivalued Weakly Picard Operators
Durmaz, Gonca; Altun, Ishak (Publications L Institut Mathematique Matematicki, 2017)This research contains some recent developments about multivalued weakly Picard operators on complete metric spaces. In addition, taking into account both multivalued theta-contraction and almost contraction on complete ... -
On Nonlinear Set-Valued theta-Contractions
Durmaz, Gonca; Altun, Ishak (MALAYSIAN MATHEMATICAL SCIENCES SOC, 2020)In this paper, we introduce and study new fixed point results for nonlinear set-valued theta-contractions. Our results are based on a new approach, which is called set-valued theta-contraction and they extend and generalize ... -
P-Contractive Mappings On Metric Spaces
Altun, Ishak; Durmaz, Gonca; Olgun, Murat (Mathematical Research Press-Math Res, 2018)In the present paper, we introduce a new concept of P-contractive mappings on metric spaces. We prove that every ordinary contractive mapping is also P-contractive but the converse may not be true in general. We provide ... -
Some fixed point results on weak partial metric spaces
Durmaz, Gonca; Acar, Ozlem; Altun, Ishak (Univ Nis, Fac Sci Math, 2013)The concept of partial metric p on a nonempty set X was introduced by Matthews [13] and it was slightly modified by Heckmann [11] as weak partial metric. In [12], the authors studied fixed point result of new extension of ...