Yazar "Olgun, Murat" için listeleme
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Fixed Point Results for F-contractions on Space with Two Metrics
Olgun, Murat; Alyildiz, Tugce; Bicer, Ozge; Altun, Ishak (Univ Nis, Fac Sci Math, 2017)In this paper, taking into account two metrics on a space, we present a new fixed point theorem for F-contractions. Our theorem includes both Agarwal and O'Regan's and Wardowski's results as properly. Also we provide a ... -
Fixed points of F-contractive type fuzzy mappings
Minak, Gulhan; Altun, Ishak; Olgun, Murat (Ios Press, 2017)In this paper, taking into account the recent contractive technique, which was introduced by Wardowski [18], we present a fixed point theorem for F-contractive type fuzzy mappings over a complete metric space. -
Fixed points of multivalued nonlinear F-contractions on complete metric spaces
Altun, Ishak; Minak, Gulhan; Olgun, Murat (Inst Mathematics & Informatics, 2016)We introduce a new concept for multivalued maps, also called multivalued nonlinear F-contraction, and give a fixed point result. Our result is a proper generalization of some recent fixed point theorems including the famous ... -
I-yakınsaklık
Olgun, Murat (Kırıkkale Üniversitesi, 2004)ÖZET /-YAKINSAKLIK OLGUN, Murat Kırıkkale Üniversitesi Fen Bilimleri Enstitüsü Matematik Anabilim Dalı, Yüksek Lisans Tezi Danışman : Yrd.Doç.Dr.Kamil DEMİRCİ Ortak Danışman: Ali Paşa AYDIN Temmuz 2004, 54 Sayfa Bu yüksek ... -
A new approach to fixed point theorems for multivalued contractive maps
Minak, Gulhan; Olgun, Murat; Altun, Ishak (North Univ Baia Mare, 2015)In the present paper, considering the Wardowski's technique we give many fixed point results for multivalued maps on complete metric space without using the Hausdorff metric. Our results are real generalization of some ... -
A New Approach To Mizoguchi-Takahashi Type Fixed Point Theorems
Olgun, Murat; Minak, Gulhan; Altun, Ishak (Yokohama Publ, 2016)In the present paper, we give a generalization of Mizoguchi-Takahashi's fixed point theorem, which is a partial solution of Reich's original problem concerning multivalued mappings on complete metric spaces. -
A new approach to the Assad-Kirk fixed point theorem
Altun, Ishak; Olgun, Murat; Minak, Gulhan (Springer Basel Ag, 2016)In the present paper, considering the Wardowski's technique, we give a new approach to the Assad-Kirk fixed point theorem on metrically convex metric spaces. We also provide a nontrivial example showing that our result is ... -
On A New Class Of Multivalued Weakly Picard Operators On Complete Metric Spaces
Altun, Ishak; Olgun, Murat; Minak, Gulhan (Mathematical Soc Rep China, 2015)In the present paper, the concept of nonlinear F-contraction for multivalued mappings in metric spaces is introduced and considering the new proof technique, which was used for single valued maps by Wardowski [D. Wardowski, ... -
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 ... -
A Related Fixed Point Theorem for F-Contractions on Two Metric Spaces
Olgun, Murat; Bicer, Ozge; Alyildiz, Tugce; Altun, Ishak (Hacettepe Univ, Fac Sci, 2019)Recently, Wardowski in [Fixed points of a new type of contractive mappings in complete metric spaces, Fixed Point Theory Appl. 2012] introduced the concept of F-contraction on complete metric space which is a proper ... -
Some new types multivalued F-contractions on quasi metric spaces and their fixed points
Hancer, Hatice Aslan; Olgun, Murat; Altun, Ishak (North Univ Baia Mare, 2019)In this paper we present two new results for the existence of fixed points of multivalued mappings with closed values on quasi metric space. First we introduce the multivalued F-d-contraction on quasi metric space (X, d) ...
