Edit Profile (opens in new tab) Altun, Ishak Co-Author Distance Author ID: altun.ishak Published as: Altun, Ishak; Altun, I.; Altun, İshak more...less Homepage: https://kariyer.kku.edu.tr/akademik/default.aspx?sicil=A-1178 External Links: ORCID Documents Indexed: 164 Publications since 2005 Co-Authors: 74 Co-Authors with 156 Joint Publications 2,401 Co-Co-Authors all top 5 Co-Authors 6 single-authored 27 Turkoglu, Duran 25 Mınak, Gülhan 18 Sedghi, Shaban 14 Olgun, Murat 13 Durmaz, Gonca 12 Acar, Özlem 10 Şahin, Hakan 8 Hançer, Hatice Aslan 7 Aslantaş, Mustafa 7 Erduran, Ali 7 Shobe, Nabi 6 Samet, Bessem 6 Shobkolaei, Nabi 6 Şimşek, Hakan 5 Abbas, Mujahid 5 Jleli, Mohamed Boussairi 5 Lashin, Aref 5 Romaguera Bonilla, Salvador 4 Alyildiz, Tuğçe 4 Biçer, Özge 4 Dağ, Hacer 4 Nashine, Hemant Kumar 3 Al Arifi, Nassir 3 Çevik, Cüneyt 3 Imdad, Mohammad 3 Roshan, Jamal Rezaei 3 Sadarangani, Kishin B. 2 Al Arifi, Nasir 2 Chauhan, Varsha 2 Fisher, Brian 2 Koca, Kerim 2 Singh, Deepak Kumar 1 Agarwal, Ravi P. 1 Alaca, Cihangir 1 Alfaqih, Waleed Mohd. 1 Asim, Mohammad 1 Başar, Ümran 1 Berinde, Vasile 1 Bindu, S. Hima 1 Chauhan, Sunny 1 Cho, Yeol Je 1 Damjanović, Boško 1 Đorić, Dragan 1 Došenović, Tatjana 1 Durmaz Güngör, Gonca 1 Firouzian, Siamak 1 Geçer, A. 1 Gençtürk, İlker 1 Gopal, Dhananjay 1 Helvacı, Asuman 1 Javaheri, Atena 1 Masiha, Hashem Parvaneh 1 Miheţ, Dorel 1 Musaev, Binali I. 1 O’Regan, Donal 1 Özeken, Çetin Cemal 1 Parvaneh, Vahid 1 Rakočević, Vladimir 1 Rao, Koduru Pandu Ranga 1 Rezaee, Mohammad Mahdi 1 Rhoades, Billy E. 1 Salahshour, Mohammad Ali 1 Sen, Ravindra 1 Shahraki, Mahryam 1 Shakeri, Rezgar 1 Shatanawi, Wasfi A. 1 Shukla, Satish 1 Sola, Ferhan 1 Soleimani Rad, Ghasem 1 Soursouri, Sima 1 Tanveer, Mohammad 1 Taşdemir, Ayşenur 1 Vujaković, Jelena 1 Yalçın, Menşur Tuğba 1 Younis, Mudasir all top 5 Serials 9 Filomat 7 Journal of Fixed Point Theory and Applications 6 Nonlinear Analysis. Modelling and Control 6 Carpathian Journal of Mathematics 5 Fixed Point Theory and Applications 4 Hacettepe Journal of Mathematics and Statistics 4 Miskolc Mathematical Notes 4 Journal of Nonlinear Science and Applications 3 Applied Mathematics and Computation 3 Topology and its Applications 3 Communications of the Korean Mathematical Society 3 Applicable Analysis and Discrete Mathematics 2 Fasciculi Mathematici 2 Kyungpook Mathematical Journal 2 Nonlinear Analysis. Theory, Methods & Applications. Series A: Theory and Methods 2 Bulletin of the Iranian Mathematical Society 2 Applied Mathematics Letters 2 The Journal of Analysis 2 The Journal of Fuzzy Mathematics 2 Mathematical Communications 2 Vietnam Journal of Mathematics 2 Abstract and Applied Analysis 2 Taiwanese Journal of Mathematics 2 Journal of Inequalities and Applications 2 Italian Journal of Pure and Applied Mathematics 2 Journal of Nonlinear and Convex Analysis 2 Nonlinear Functional Analysis and Applications 2 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 2 Acta Universitatis Apulensis. Mathematics - Informatics 2 Journal of Intelligent and Fuzzy Systems 2 Thai Journal of Mathematics 2 Fixed Point Theory 2 Iranian Journal of Fuzzy Systems 2 Creative Mathematics and Informatics 2 Journal of Advanced Mathematical Studies 2 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 2 Journal of Nonlinear Analysis and Optimization: Theory & Applications 2 Carpathian Mathematical Publications 1 Computers & Mathematics with Applications 1 Mathematical Methods in the Applied Sciences 1 Ukrainian Mathematical Journal 1 Chaos, Solitons and Fractals 1 Ars Combinatoria 1 Demonstratio Mathematica 1 Indian Journal of Mathematics 1 International Journal of Mathematics and Mathematical Sciences 1 Matematički Vesnik 1 Mathematica Slovaca 1 Numerical Functional Analysis and Optimization 1 Publications de l’Institut Mathématique. Nouvelle Série 1 Publicationes Mathematicae Debrecen 1 Quaestiones Mathematicae 1 Rendiconti del Circolo Matemàtico di Palermo. Serie II 1 Rendiconti del Seminario Matematico della Università di Padova 1 Tamkang Journal of Mathematics 1 Southeast Asian Bulletin of Mathematics 1 Bulletin of the Korean Mathematical Society 1 Acta Mathematica Hungarica 1 Panamerican Mathematical Journal 1 Topological Methods in Nonlinear Analysis 1 Bulletin of the Belgian Mathematical Society - Simon Stevin 1 Turkish Journal of Mathematics 1 Boletín de la Sociedad Matemática Mexicana. Third Series 1 Analele Științifice ale Universității “Ovidius” Constanța. Seria: Matematică 1 Novi Sad Journal of Mathematics 1 Mathematica Moravica 1 Journal of Computational Analysis and Applications 1 Communications in Nonlinear Science and Numerical Simulation 1 International Journal of Nonlinear Sciences and Numerical Simulation 1 Discussiones Mathematicae. Differential Inclusions, Control and Optimization 1 Dynamics of Continuous, Discrete & Impulsive Systems. Series A. Mathematical Analysis 1 Applied Mathematics E-Notes 1 Journal of Function Spaces and Applications 1 Complex Variables and Elliptic Equations 1 Kochi Journal of Mathematics 1 Banach Journal of Mathematical Analysis 1 Bulletin of Mathematical Analysis and Applications 1 Advances in Fuzzy Systems 1 Applied General Topology 1 International Journal of Nonlinear Analysis and Applications 1 Arabian Journal for Science and Engineering 1 Communications in Mathematics 1 Arabian Journal of Mathematics 1 ISRN Computational Mathematics 1 Mathematical Sciences 1 Electronic Journal of Mathematical Analysis and Applications EJMAA 1 Kuwait Journal of Science 1 Topological Algebra and its Applications 1 Journal of Linear and Topological Algebra 1 Journal of Function Spaces 1 Sahand Communications in Mathematical Analysis 1 Open Mathematics 1 Korean Journal of Mathematics all top 5 Fields 156 General topology (54-XX) 106 Operator theory (47-XX) 5 Integral equations (45-XX) 3 Real functions (26-XX) 3 Functions of a complex variable (30-XX) 3 Ordinary differential equations (34-XX) 3 Numerical analysis (65-XX) 1 Combinatorics (05-XX) 1 Number theory (11-XX) 1 Measure and integration (28-XX) 1 Several complex variables and analytic spaces (32-XX) 1 Partial differential equations (35-XX) 1 Difference and functional equations (39-XX) 1 Approximations and expansions (41-XX) 1 Calculus of variations and optimal control; optimization (49-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 130 Publications have been cited 1,764 times in 1,068 Documents Cited by ▼ Year ▼ Generalized contractions on partial metric spaces. Zbl 1207.54052 Altun, Ishak; Sola, Ferhan; Simsek, Hakan 188 2010 Some fixed point theorems on ordered metric spaces and application. Zbl 1197.54053 Altun, Ishak; Simsek, Hakan 127 2010 Fixed point theorems for monotone mappings on partial metric spaces. Zbl 1207.54051 Altun, Ishak; Erduran, Ali 116 2011 Fixed point and common fixed point theorems on ordered cone metric spaces. Zbl 1197.54052 Altun, Ishak; Damjanović, Boško; Djorić, Dragan 90 2010 Ćirić type generalized \(F\)-contractions on complete metric spaces and fixed point results. Zbl 1462.54079 Mınak, Gülhan; Helvacı, Asuman; Altun, Ishak 59 2014 Multivalued \(F\)-contractions on complete metric spaces. Zbl 1315.54032 Altun, Ishak; Minak, Gülhan; Dağ, Hacer 55 2015 Some fixed point theorems on ordered cone metric spaces. Zbl 1184.54038 Altun, Ishak; Durmaz, Gonca 46 2009 Coupled fixed point theorems for contractions in fuzzy metric spaces. Zbl 1180.54060 Sedghi, Shaban; Altun, Ishak; Shobe, Nabi 45 2010 Some fixed point theorems on dualistic partial metric spaces. Zbl 1172.54318 Altun, Ishak; Simsek, Hakan 43 2008 Fixed points of weakly compatible maps satisfying a general contractive condition of integral type. Zbl 1153.54022 Altun, Ishak; Türkoğlu, Duran; Rhoades, Billy E. 43 2007 Some coincidence point results in ordered \(b\)-metric spaces and applications in a system of integral equations. Zbl 1354.45010 Roshan, J. R.; Parvaneh, V.; Altun, I. 42 2014 Some fixed point theorems for weakly compatible mappings satisfying an implicit relation. Zbl 1194.54055 Altun, Ishak; Turkoglu, Duran 29 2009 Fixed point theorems for weak contractions in the sense of Berinde on partial metric spaces. Zbl 1262.54015 Altun, Ishak; Acar, Özlem 27 2012 Best proximity point results for \(p\)-proximal contractions. Zbl 1474.54107 Altun, I.; Aslantas, M.; Sahin, H. 26 2020 Fixed point theorems for generalized weakly contractive condition in ordered metric spaces. Zbl 1213.54070 Nashine, Hemant Kumar; Altun, Ishak 26 2011 Fixed points of ordered \(F\)-contractions. Zbl 1347.54074 Durmaz, Gonca; Mınak, Gülhan; Altun, Ishak 25 2016 Feng-Liu type approach to best proximity point results for multivalued mappings. Zbl 1431.54039 Sahin, Hakan; Aslantas, Mustafa; Altun, Ishak 23 2020 Best proximity point theorems for cyclic \(p\)-contractions with some consequences and applications. Zbl 1476.54052 Aslantas, Mustafa; Sahin, Hakan; Altun, Ishak 22 2021 A fixed point theorem for multi-valued mappings and its applications to integral inclusions. Zbl 1130.47057 Turkoglu, D.; Altun, I. 22 2007 On a broad category of multivalued weakly Picard operators. Zbl 1360.54032 Hançer, Hatice Aslan; Mınak, Gülhan; Altun, Ishak 21 2017 A fixed point theorem for mappings satisfying a general contractive condition of operator type. Zbl 1122.54020 Altun, Ishak; Turkoglu, Duran 20 2007 Multivalued almost \(F\)-contractions on complete metric spaces. Zbl 1461.54075 Altun, Ishak; Durmaz, Gonca; Mınak, Gülhan; Romaguera, Salvador 19 2016 Some new generalizations of Mizoguchi-Takahashi type fixed point theorem. Zbl 1293.54030 Mınak, Gülhan; Altun, Ishak 19 2013 A new approach to Mizoguchi-Takahashi type fixed point theorems. Zbl 1352.54034 Olgun, Murat; Minak, Gülhan; Altun, Ishak 19 2016 A fixed point theorem for multivalued mappings with \(\delta\)-distance. Zbl 1469.54033 Acar, Özlem; Altun, Ishak 16 2014 A new approach to fixed point theorems for multivalued contractive maps. Zbl 1349.54111 Minak, Gülhan; Olgun, Murat; Altun, Ishak 16 2015 Corrigendum to “Generalized contractions on partial metric spaces” [Topology Appl. 157 (2010) 2778-2785]. Zbl 1226.54041 Altun, I.; Sadarangani, K. 16 2011 Ordered non-Archimedean fuzzy metric spaces and some fixed point results. Zbl 1191.54033 Altun, Ishak; Miheţ, Dorel 16 2010 On a new class of multivalued weakly Picard operators on complete metric spaces. Zbl 1357.54029 Altun, Ishak; Olgun, Murat; Mınak, Gülhan 15 2015 Characterizations of partial metric completeness in terms of weakly contractive mappings having fixed point. Zbl 1289.54112 Altun, Ishak; Romaguera, Salvador 15 2012 Ordered cone metric spaces and fixed point results. Zbl 1201.65084 Altun, Ishak; Rakočević, Vladimir 15 2010 Some fixed point theorems for single and multivalued mappings on ordered non-Archimedean fuzzy metric spaces. Zbl 1204.54025 Altun, I. 15 2010 Some generalizations of Caristi type fixed point theorem on partial metric spaces. Zbl 1289.54110 Acar, Özlem; Altun, Ishak 14 2012 Some fixed point theorems for weakly compatible multivalued mappings satisfying an implicit relation. Zbl 1199.54202 Altun, Ishak; Turkoglu, Duran 14 2008 Classification of completeness of quasi metric space and some fixed point results. Zbl 1378.54041 Altun, Ishak; Mınak, Gülhan; Olgun, Murat 13 2017 Carisi’s type mappings on complete partial metric spaces. Zbl 1282.54027 Acar, Özlem; Altun, Ishak; Romaguera, Salvador 13 2013 Common fixed point Theorems for non compatible mappings in fuzzy metric spaces. Zbl 1175.54048 Abbas, Mujahid; Altun, Ishak; Gopal, Dhananjay 13 2009 Vector metric spaces and some properties. Zbl 1201.54027 Çevik, Cüneyt; Altun, Ishak 13 2009 Lyapunov-type inequalities for a fractional \(p\)-Laplacian equation. Zbl 1346.34004 Al Arifi, Nassir; Altun, Ishak; Jleli, Mohamed; Lashin, Aref; Samet, Bessem 12 2016 Fixed points of multivalued nonlinear \(F\)-contractions on complete metric spaces. Zbl 1420.54065 Altun, Ishak; Mınak, Gülhan; Olgun, Murat 12 2016 Graphical structure of extended \(b\)-metric spaces: an application to the transverse oscillations of a homogeneous bar. Zbl 07678010 Younis, Mudasir; Singh, Deepak; Altun, Ishak; Chauhan, Varsha 12 2022 Fixed-point theorems for integral-type contractions on partial metric spaces. Zbl 1499.54206 Sabetghadam, F.; Masiha, H. P.; Altun, I. 11 2016 Some properties of \(S\)-metric spaces and fixed point results. Zbl 1295.54084 Sedghi, Shaban; Altun, Ishak; Shobe, Nabi; Salahshour, Mohammad Ali 10 2014 A common fixed point theorem on ordered metric spaces. Zbl 1297.54093 Nashine, Hemant Kumar; Altun, Ishak 10 2012 Weak partial metric spaces and some fixed point results. Zbl 1256.54068 Altun, I.; Durmaz, G. 10 2012 KW-type nonlinear contractions and their best proximity points. Zbl 1473.54044 Altun, Ishak; Aslantas, Mustafa; Sahin, Hakan 10 2021 Common fixed point of mappings satisfying almost generalized \((S,T)\)-contractive condition in partially ordered partial metric spaces. Zbl 1286.54055 Shobkolaei, N.; Sedghi, S.; Roshan, J. R.; Altun, I. 9 2012 A common fixed point theorem for weakly compatible mappings in symmetric spaces satisfying an implicit relation. Zbl 1171.54342 Turkoglu, Duran; Altun, Ishak 9 2007 Some fixed point results for multivalued \(F\)-contractions on quasi metric spaces. Zbl 1356.54043 Dağ, H.; Mınak, G.; Altun, I. 9 2017 A new approach for the approximations of solutions to a common fixed point problem in metric fixed point theory. Zbl 1470.54038 Altun, Ishak; Al Arifi, Nassir; Jleli, Mohamed; Lashin, Aref; Samet, Bessem 8 2016 On fixed point theorems for multivalued mappings of Feng-Liu type. Zbl 1332.54205 Altun, Ishak; Minak, Gülhan 8 2015 Multivalued pseudo-Picard operators and fixed point results. Zbl 1440.54037 Mınak, Gülhan; Acar, Özlem; Altun, Ishak 8 2013 A fixed point theorem for multi-maps satisfying an implicit relation on metric spaces. Zbl 1199.54245 Sedghi, S.; Altun, I.; Shobe, N. 8 2008 A new approach to the Assad-Kirk fixed point theorem. Zbl 1353.54028 Altun, Ishak; Olgun, Murat; Mınak, Gülhan 8 2016 On a general class of weakly Picard operators. Zbl 1340.54054 Altun, Ishak; Hançer, Hatice Aslan; Minak, Gülhan 7 2015 Common fixed point of a power graphic \((F,\psi)\)-contraction pair on partial \(b\)-metric spaces with application. Zbl 1420.54092 Singh, Deepak; Chauhan, Varsha; Altun, Ishak 7 2017 Fixed point results for \(\alpha\)-admissible multivalued \(F\)-contractions. Zbl 1389.54086 Durmaz, G.; Altun, I. 7 2016 Two fixed point results for multivalued \(F\)-contractions on \(M\)-metric spaces. Zbl 1489.54211 Sahin, Hakan; Altun, Ishak; Turkoglu, Duran 7 2019 Some fixed point results on weak partial metric spaces. Zbl 1324.54068 Durmaz, Gonca; Acar, Özlem; Altun, Ishak 7 2013 Some fixed point theorems for weakly compatible multivalued mappings satisfying some general contractive conditions of integral type. Zbl 1217.54035 Altun, I.; Turkoglu, D. 7 2010 A Suzuki type fixed-point theorem. Zbl 1420.54064 Altun, Ishak; Erduran, Ali 7 2011 Fixed point theorems for Ćirić-type strong almost contractions on partial metric spaces. Zbl 1266.54082 Acar, Özlem; Berinde, Vasile; Altun, Ishak 7 2012 Generalized Geraghty type mappings on partial metric spaces and fixed point results. Zbl 1276.54030 Altun, Ishak; Sadarangani, Kishin 6 2013 Some fixed point theorems on fuzzy metric spaces with implicit relations. Zbl 1168.54326 Altun, Ishak; Turkoglu, Duran 6 2008 A common fixed point theorem for multivalued Ćirić type mappings with new type compatibility. Zbl 1199.54201 Altun, Ishak 6 2009 New fixed point results for maps satisfying implicit relations on ordered metric spaces and application. Zbl 1334.54069 Nashine, Hemant Kumar; Altun, Ishak 6 2014 A new concept of \((\alpha ,F_d)\)-contraction on quasi metric space. Zbl 1341.54025 Altun, Ishak; Al Arifi, Nasir; Jleli, Mohamed; Lashin, Aref; Samet, Bessem 6 2016 Fixed point and homotopy results for multivalued maps satisfying an implicit relation. Zbl 1205.54036 Altun, Ishak 6 2011 Common coupled fixed-point theorems in generalized fuzzy metric spaces. Zbl 1235.54050 Rao, K. P. R.; Altun, I.; Bindu, S. Hima 6 2011 Feng-Liu type fixed point results for multivalued mappings on JS-metric spaces. Zbl 1347.54066 Altun, Ishak; Al Arifi, Nasir; Jleli, Mohammed; Lashin, Aref; Samet, Bessem 5 2016 Fixed point theorems for generalized \(\varphi\)-weak contractive multivalued maps on metric and ordered metric spaces. Zbl 1297.54079 Altun, Ishak 5 2011 A fixed point theorem for multi-maps satisfying an implicit relation on metrically convex metric spaces. Zbl 1105.54303 Altun, I.; Hancer, H. A.; Turkoglu, D. 5 2006 A fixed fuzzy point for fuzzy mappings in complete metric spaces. Zbl 1157.54310 Sedghi, Shaban; Shobe, Nabi; Altun, Ishak 5 2008 A new perspective for multivalued weakly Picard operators. Zbl 1491.54074 Durmaz, Gonca; Altun, Ishak 5 2017 Caristi-type fixed point theorems and some generalizations on \(M\)-metric space. Zbl 1437.54039 Altun, Ishak; Sahin, Hakan; Turkoglu, Duran 5 2020 Common fixed point theorem for maps satisfying a general contractive condition of integral type. Zbl 1212.54111 Altun, Ishak 5 2010 Some fixed point theorems on ordered uniform space. Zbl 1265.54151 Altun, Ishak; Imdad, Mohammad 5 2009 Some fixed point theorems for contractive mapping in ordered vector metric spaces. Zbl 1412.47103 Çevik, Cüneyt; Altun, Ishak; Şahin, Hakan; Özeken, Çetin Cemal 4 2017 Overall approach to Mizoguchi-Takahashi type fixed point results. Zbl 1424.54092 Minak, Gülhan; Altun, Ishak 4 2016 Some common fixed point theorems in vector metric spaces. Zbl 1289.54111 Altun, Ishak; Çevik, Cüneyt 4 2011 Fixed point theorems for weakly contractive mappings on \(G\)-metric spaces and a homotopy result. Zbl 1281.54023 Erduran, A.; Altun, I. 4 2012 On compatible mappings of type \((I)\) and \((II)\) in intuitionistic fuzzy metric spaces. Zbl 1168.54324 Alaca, Cihangir; Altun, Ishak; Turkoglu, Duran 4 2008 Some fixed point theorems for mappings satisfying contractive condition of integral type on \(d\)-complete topological spaces. Zbl 1184.54039 Altun, Ishak; Turkoglu, Duran 4 2009 A new approach to fractals via best proximity point. Zbl 1498.28007 Altun, Ishak; Sahin, Hakan; Aslantas, Mustafa 4 2021 On best proximity points of interpolative proximal contractions. Zbl 1477.54046 Altun, Ishak; Taşdemir, Ayşenur 4 2021 On nonlinear set-valued \(\theta\)-contractions. Zbl 1432.54056 Durmaz, Gonca; Altun, Ishak 4 2020 Fixed point and homotopy result for mappings satisfying an implicit relation. Zbl 1152.54350 Altun, I.; Turkoglu, D. 4 2007 A fixed point theorem for JS-contraction type mappings with applications to polynomial approximations. Zbl 1477.54045 Altun, Ishak; Al Arifi, Nassir; Jleli, Mohamed; Lashin, Aref; Samet, Bessem 4 2017 An extension of Assad-Kirk’s fixed point theorem for multivalued nonself mappings. Zbl 1399.54079 Altun, Ishak; Minak, Gülhan 3 2016 Recent developments about multivalued weakly Picard operators. Zbl 1326.54046 Minak, Gülhan; Altun, Ishak; Romaguera, Salvador 3 2015 Fixed point results for \(\alpha\)-\(\psi\)-contractive mappings including almost contractions and applications. Zbl 1474.54150 Durmaz, Gonca; Mınak, Gülhan; Altun, Ishak 3 2014 Two type quasi-contractions on quasi metric spaces and some fixed point results. Zbl 1412.54058 Şimşek, Hakan; Altun, Ishak 3 2017 Fixed point theorems and asymptotically regular mappings in partial metric spaces. Zbl 1268.54034 Shukla, Satish; Altun, Ishak; Sen, Ravindra 3 2013 Fixed point theorems for generalized almost contractions in partial metric spaces. Zbl 1304.54066 Altun, Ishak; Sadarangani, Kishin 3 2014 Fixed point results for Perov type \(F\)-contractions and an application. Zbl 1439.54023 Altun, Ishak; Olgun, Murat 3 2020 Best proximity and best periodic points for proximal nonunique contractions. Zbl 1476.54113 Sahin, Hakan; Aslantas, Mustafa; Altun, Ishak 3 2021 A fixed point theorem on cone metric spaces with new type contractivity. Zbl 1223.54053 Altun, Ishak; Abbas, Mujahid; Simsek, Hakan 3 2011 Application of Perov type fixed point results to complex partial differential equations. Zbl 07376657 Altun, Ishak; Qasim, Muhammad 3 2021 Common fixed point results on vector metric spaces. Zbl 1438.54153 Rad, G. Soleimani; Altun, I. 2 2016 Fixed point theorems for weakly contractive mappings on \(S\)-metric spaces and a homotopy result. Zbl 1414.54034 Rezaee, Mohammad Mahdi; Shahraki, Mahryam; Sedghi, Shaban; Altun, Ishak 2 2017 Graphical structure of extended \(b\)-metric spaces: an application to the transverse oscillations of a homogeneous bar. Zbl 07678010 Younis, Mudasir; Singh, Deepak; Altun, Ishak; Chauhan, Varsha 12 2022 Best proximity point theorems for cyclic \(p\)-contractions with some consequences and applications. Zbl 1476.54052 Aslantas, Mustafa; Sahin, Hakan; Altun, Ishak 22 2021 KW-type nonlinear contractions and their best proximity points. Zbl 1473.54044 Altun, Ishak; Aslantas, Mustafa; Sahin, Hakan 10 2021 A new approach to fractals via best proximity point. Zbl 1498.28007 Altun, Ishak; Sahin, Hakan; Aslantas, Mustafa 4 2021 On best proximity points of interpolative proximal contractions. Zbl 1477.54046 Altun, Ishak; Taşdemir, Ayşenur 4 2021 Best proximity and best periodic points for proximal nonunique contractions. Zbl 1476.54113 Sahin, Hakan; Aslantas, Mustafa; Altun, Ishak 3 2021 Application of Perov type fixed point results to complex partial differential equations. Zbl 07376657 Altun, Ishak; Qasim, Muhammad 3 2021 Best proximity point results for \(p\)-proximal contractions. Zbl 1474.54107 Altun, I.; Aslantas, M.; Sahin, H. 26 2020 Feng-Liu type approach to best proximity point results for multivalued mappings. Zbl 1431.54039 Sahin, Hakan; Aslantas, Mustafa; Altun, Ishak 23 2020 Caristi-type fixed point theorems and some generalizations on \(M\)-metric space. Zbl 1437.54039 Altun, Ishak; Sahin, Hakan; Turkoglu, Duran 5 2020 On nonlinear set-valued \(\theta\)-contractions. Zbl 1432.54056 Durmaz, Gonca; Altun, Ishak 4 2020 Fixed point results for Perov type \(F\)-contractions and an application. Zbl 1439.54023 Altun, Ishak; Olgun, Murat 3 2020 Fixed point results for multivalued mappings of Ćirić type via \(F\)-contractions on quasi metric spaces. Zbl 1435.54033 Shatanawi, Wasfi; Altun, Ishak; Dağ, Hacer 2 2020 Fixed point results for single valued and set valued \(P\)-contractions and application to second order boundary value problems. Zbl 1478.54037 Altun, Ishak; Hançer, Hatice Aslan; Erduran, Ali 1 2020 A common fixed point theorem on ordered partial \(S\)-metric spaces and applications. Zbl 1441.54040 Soursouri, Sima; Shobkolaei, Nabi; Sedghi, Shaban; Altun, Ishak 1 2020 An existence and uniqueness theorem for a fractional boundary value problem via new fixed point results on quasi metric spaces. Zbl 1448.54025 Altun, Ishak; Olgun, Murat 1 2020 Two fixed point results for multivalued \(F\)-contractions on \(M\)-metric spaces. Zbl 1489.54211 Sahin, Hakan; Altun, Ishak; Turkoglu, Duran 7 2019 Fixed point results for \(F_\mathcal{R}\)-generalized contractive mappings in partial metric spaces. Zbl 1505.54062 Altun, Ishak; Asim, Mohammad; Imdad, Mohammad; Alfaqih, Waleed M. 2 2019 Pseudo Picard operators on generalized metric spaces. Zbl 1488.54101 Altun, Ishak; Samet, Bessem 1 2018 On a broad category of multivalued weakly Picard operators. Zbl 1360.54032 Hançer, Hatice Aslan; Mınak, Gülhan; Altun, Ishak 21 2017 Classification of completeness of quasi metric space and some fixed point results. Zbl 1378.54041 Altun, Ishak; Mınak, Gülhan; Olgun, Murat 13 2017 Some fixed point results for multivalued \(F\)-contractions on quasi metric spaces. Zbl 1356.54043 Dağ, H.; Mınak, G.; Altun, I. 9 2017 Common fixed point of a power graphic \((F,\psi)\)-contraction pair on partial \(b\)-metric spaces with application. Zbl 1420.54092 Singh, Deepak; Chauhan, Varsha; Altun, Ishak 7 2017 A new perspective for multivalued weakly Picard operators. Zbl 1491.54074 Durmaz, Gonca; Altun, Ishak 5 2017 Some fixed point theorems for contractive mapping in ordered vector metric spaces. Zbl 1412.47103 Çevik, Cüneyt; Altun, Ishak; Şahin, Hakan; Özeken, Çetin Cemal 4 2017 A fixed point theorem for JS-contraction type mappings with applications to polynomial approximations. Zbl 1477.54045 Altun, Ishak; Al Arifi, Nassir; Jleli, Mohamed; Lashin, Aref; Samet, Bessem 4 2017 Two type quasi-contractions on quasi metric spaces and some fixed point results. Zbl 1412.54058 Şimşek, Hakan; Altun, Ishak 3 2017 Fixed point theorems for weakly contractive mappings on \(S\)-metric spaces and a homotopy result. Zbl 1414.54034 Rezaee, Mohammad Mahdi; Shahraki, Mahryam; Sedghi, Shaban; Altun, Ishak 2 2017 A new sequence realizing Lucas numbers, and the Lucas bound. Zbl 1371.11042 Özkan, E.; Geçer, A.; Altun, İ. 2 2017 Nonlinear proximinal multivalued contractions on quasi-metric spaces. Zbl 1378.54040 Altun, Ishak; Dağ, Hacer 1 2017 Fixed points of \(F\)-contractive type fuzzy mappings. Zbl 1422.54055 Mınak, Gülhan; Altun, Ishak; Olgun, Murat 1 2017 Fixed point results for \(F\)-contractions on space with two metrics. Zbl 1499.54191 Olgun, Murat; Alyıldız, Tuğçe; Biçer, Özge; Altun, Ishak 1 2017 Fixed points of ordered \(F\)-contractions. Zbl 1347.54074 Durmaz, Gonca; Mınak, Gülhan; Altun, Ishak 25 2016 Multivalued almost \(F\)-contractions on complete metric spaces. Zbl 1461.54075 Altun, Ishak; Durmaz, Gonca; Mınak, Gülhan; Romaguera, Salvador 19 2016 A new approach to Mizoguchi-Takahashi type fixed point theorems. Zbl 1352.54034 Olgun, Murat; Minak, Gülhan; Altun, Ishak 19 2016 Lyapunov-type inequalities for a fractional \(p\)-Laplacian equation. Zbl 1346.34004 Al Arifi, Nassir; Altun, Ishak; Jleli, Mohamed; Lashin, Aref; Samet, Bessem 12 2016 Fixed points of multivalued nonlinear \(F\)-contractions on complete metric spaces. Zbl 1420.54065 Altun, Ishak; Mınak, Gülhan; Olgun, Murat 12 2016 Fixed-point theorems for integral-type contractions on partial metric spaces. Zbl 1499.54206 Sabetghadam, F.; Masiha, H. P.; Altun, I. 11 2016 A new approach for the approximations of solutions to a common fixed point problem in metric fixed point theory. Zbl 1470.54038 Altun, Ishak; Al Arifi, Nassir; Jleli, Mohamed; Lashin, Aref; Samet, Bessem 8 2016 A new approach to the Assad-Kirk fixed point theorem. Zbl 1353.54028 Altun, Ishak; Olgun, Murat; Mınak, Gülhan 8 2016 Fixed point results for \(\alpha\)-admissible multivalued \(F\)-contractions. Zbl 1389.54086 Durmaz, G.; Altun, I. 7 2016 A new concept of \((\alpha ,F_d)\)-contraction on quasi metric space. Zbl 1341.54025 Altun, Ishak; Al Arifi, Nasir; Jleli, Mohamed; Lashin, Aref; Samet, Bessem 6 2016 Feng-Liu type fixed point results for multivalued mappings on JS-metric spaces. Zbl 1347.54066 Altun, Ishak; Al Arifi, Nasir; Jleli, Mohammed; Lashin, Aref; Samet, Bessem 5 2016 Overall approach to Mizoguchi-Takahashi type fixed point results. Zbl 1424.54092 Minak, Gülhan; Altun, Ishak 4 2016 An extension of Assad-Kirk’s fixed point theorem for multivalued nonself mappings. Zbl 1399.54079 Altun, Ishak; Minak, Gülhan 3 2016 Common fixed point results on vector metric spaces. Zbl 1438.54153 Rad, G. Soleimani; Altun, I. 2 2016 On the effect of \(\alpha\)-admissibility and \(\alpha\)-contractivity to the existence of fixed points of multivalued mappings. Zbl 1420.54079 Mınak, Gülhan; Altun, Ishak 1 2016 Multivalued \(F\)-contractions on complete metric spaces. Zbl 1315.54032 Altun, Ishak; Minak, Gülhan; Dağ, Hacer 55 2015 A new approach to fixed point theorems for multivalued contractive maps. Zbl 1349.54111 Minak, Gülhan; Olgun, Murat; Altun, Ishak 16 2015 On a new class of multivalued weakly Picard operators on complete metric spaces. Zbl 1357.54029 Altun, Ishak; Olgun, Murat; Mınak, Gülhan 15 2015 On fixed point theorems for multivalued mappings of Feng-Liu type. Zbl 1332.54205 Altun, Ishak; Minak, Gülhan 8 2015 On a general class of weakly Picard operators. Zbl 1340.54054 Altun, Ishak; Hançer, Hatice Aslan; Minak, Gülhan 7 2015 Recent developments about multivalued weakly Picard operators. Zbl 1326.54046 Minak, Gülhan; Altun, Ishak; Romaguera, Salvador 3 2015 A new approach to Caristi’s fixed point theorem on non-Archimedean fuzzy metric spaces. Zbl 1338.54218 Sedghi, S.; Shobkolaei, N.; Altun, I. 2 2015 Partial fuzzy metric space and some fixed point results. Zbl 1337.54047 Sedghi, Shaban; Shobkolaei, Nabi; Altun, Ishak 2 2015 Multivalued almost contractions in metric space endowed with a graph. Zbl 1349.54079 Altun, Ishak; Acar, Özlem 1 2015 Ćirić type generalized \(F\)-contractions on complete metric spaces and fixed point results. Zbl 1462.54079 Mınak, Gülhan; Helvacı, Asuman; Altun, Ishak 59 2014 Some coincidence point results in ordered \(b\)-metric spaces and applications in a system of integral equations. Zbl 1354.45010 Roshan, J. R.; Parvaneh, V.; Altun, I. 42 2014 A fixed point theorem for multivalued mappings with \(\delta\)-distance. Zbl 1469.54033 Acar, Özlem; Altun, Ishak 16 2014 Some properties of \(S\)-metric spaces and fixed point results. Zbl 1295.54084 Sedghi, Shaban; Altun, Ishak; Shobe, Nabi; Salahshour, Mohammad Ali 10 2014 New fixed point results for maps satisfying implicit relations on ordered metric spaces and application. Zbl 1334.54069 Nashine, Hemant Kumar; Altun, Ishak 6 2014 Fixed point results for \(\alpha\)-\(\psi\)-contractive mappings including almost contractions and applications. Zbl 1474.54150 Durmaz, Gonca; Mınak, Gülhan; Altun, Ishak 3 2014 Fixed point theorems for generalized almost contractions in partial metric spaces. Zbl 1304.54066 Altun, Ishak; Sadarangani, Kishin 3 2014 A related fixed point theorem for maps in two S-complete Hausdorff uniform spaces. Zbl 1306.54056 Shobkolaei, Nabi; Sedghi, Shaban; Roshan, Jamal R.; Altun, Ishak 1 2014 Two general fixed point results on weak partial metric space. Zbl 1413.54112 Durmaz, Gonca; Acar, Özlem; Altun, Ishak 1 2014 Multivalued weakly Picard operators on partial metric spaces. Zbl 1294.54031 Mınak, Gülhan; Altun, Ishak 1 2014 Mizoguchi-Takahashi type fixed point theorem on partial metric spaces. Zbl 1369.54028 Altun, Ishak; Minak, Gülhan 1 2014 Some new generalizations of Mizoguchi-Takahashi type fixed point theorem. Zbl 1293.54030 Mınak, Gülhan; Altun, Ishak 19 2013 Carisi’s type mappings on complete partial metric spaces. Zbl 1282.54027 Acar, Özlem; Altun, Ishak; Romaguera, Salvador 13 2013 Multivalued pseudo-Picard operators and fixed point results. Zbl 1440.54037 Mınak, Gülhan; Acar, Özlem; Altun, Ishak 8 2013 Some fixed point results on weak partial metric spaces. Zbl 1324.54068 Durmaz, Gonca; Acar, Özlem; Altun, Ishak 7 2013 Generalized Geraghty type mappings on partial metric spaces and fixed point results. Zbl 1276.54030 Altun, Ishak; Sadarangani, Kishin 6 2013 Fixed point theorems and asymptotically regular mappings in partial metric spaces. Zbl 1268.54034 Shukla, Satish; Altun, Ishak; Sen, Ravindra 3 2013 Common fixed points of Ćirić-type contractions on partial metric spaces. Zbl 1299.54074 Abbas, Mujahid; Altun, Ishak; Romaguera, Salvador 2 2013 Fixed point theorems for weak contractions in the sense of Berinde on partial metric spaces. Zbl 1262.54015 Altun, Ishak; Acar, Özlem 27 2012 Characterizations of partial metric completeness in terms of weakly contractive mappings having fixed point. Zbl 1289.54112 Altun, Ishak; Romaguera, Salvador 15 2012 Some generalizations of Caristi type fixed point theorem on partial metric spaces. Zbl 1289.54110 Acar, Özlem; Altun, Ishak 14 2012 A common fixed point theorem on ordered metric spaces. Zbl 1297.54093 Nashine, Hemant Kumar; Altun, Ishak 10 2012 Weak partial metric spaces and some fixed point results. Zbl 1256.54068 Altun, I.; Durmaz, G. 10 2012 Common fixed point of mappings satisfying almost generalized \((S,T)\)-contractive condition in partially ordered partial metric spaces. Zbl 1286.54055 Shobkolaei, N.; Sedghi, S.; Roshan, J. R.; Altun, I. 9 2012 Fixed point theorems for Ćirić-type strong almost contractions on partial metric spaces. Zbl 1266.54082 Acar, Özlem; Berinde, Vasile; Altun, Ishak 7 2012 Fixed point theorems for weakly contractive mappings on \(G\)-metric spaces and a homotopy result. Zbl 1281.54023 Erduran, A.; Altun, I. 4 2012 Fixed point theorems for a pair of mappings satisfying a generalized weakly contractive condition in ordered metric spaces. Zbl 1278.54041 Nashine, Hemant Kumar; Altun, Ishak 2 2012 Common fixed point theorems of integral type in Menger PM spaces. Zbl 1413.54098 Altun, I.; Tanveer, M.; Imdad, M. 1 2012 Some properties of \(T\)-metric spaces and a common fixed point theorem. Zbl 1256.54080 Sedghi, S.; Altun, I.; Shobe, N. 1 2012 Fixed point theorems for monotone mappings on partial metric spaces. Zbl 1207.54051 Altun, Ishak; Erduran, Ali 116 2011 Fixed point theorems for generalized weakly contractive condition in ordered metric spaces. Zbl 1213.54070 Nashine, Hemant Kumar; Altun, Ishak 26 2011 Corrigendum to “Generalized contractions on partial metric spaces” [Topology Appl. 157 (2010) 2778-2785]. Zbl 1226.54041 Altun, I.; Sadarangani, K. 16 2011 A Suzuki type fixed-point theorem. Zbl 1420.54064 Altun, Ishak; Erduran, Ali 7 2011 Fixed point and homotopy results for multivalued maps satisfying an implicit relation. Zbl 1205.54036 Altun, Ishak 6 2011 Common coupled fixed-point theorems in generalized fuzzy metric spaces. Zbl 1235.54050 Rao, K. P. R.; Altun, I.; Bindu, S. Hima 6 2011 Fixed point theorems for generalized \(\varphi\)-weak contractive multivalued maps on metric and ordered metric spaces. Zbl 1297.54079 Altun, Ishak 5 2011 Some common fixed point theorems in vector metric spaces. Zbl 1289.54111 Altun, Ishak; Çevik, Cüneyt 4 2011 A fixed point theorem on cone metric spaces with new type contractivity. Zbl 1223.54053 Altun, Ishak; Abbas, Mujahid; Simsek, Hakan 3 2011 Common fixed point theorems for weakly increasing mappings on ordered uniform spaces. Zbl 1240.54116 Altun, Ishak 2 2011 Generalized contractions on partial metric spaces. Zbl 1207.54052 Altun, Ishak; Sola, Ferhan; Simsek, Hakan 188 2010 Some fixed point theorems on ordered metric spaces and application. Zbl 1197.54053 Altun, Ishak; Simsek, Hakan 127 2010 Fixed point and common fixed point theorems on ordered cone metric spaces. Zbl 1197.54052 Altun, Ishak; Damjanović, Boško; Djorić, Dragan 90 2010 Coupled fixed point theorems for contractions in fuzzy metric spaces. Zbl 1180.54060 Sedghi, Shaban; Altun, Ishak; Shobe, Nabi 45 2010 Ordered non-Archimedean fuzzy metric spaces and some fixed point results. Zbl 1191.54033 Altun, Ishak; Miheţ, Dorel 16 2010 ...and 30 more Documents all cited Publications top 5 cited Publications all top 5 Cited by 1,060 Authors 67 Aydi, Hassen Mohamed 63 Karapınar, Erdal 56 Radenovic, Stojan 54 Altun, Ishak 48 Abbas, Mujahid 44 Nashine, Hemant Kumar 40 Imdad, Mohammad 36 Samet, Bessem 35 Vetro, Calogero 29 Arshad, Muhammad 27 Shatanawi, Wasfi A. 26 Hussain, Nawab 26 Kadelburg, Zoran 26 Kumam, Poom 21 Nazam, Muhammad 21 Parvaneh, Vahid 20 Ali, Muhammad Usman 19 Nazir, Talat 19 Sintunavarat, Wutiphol 16 Abdeljawad, Thabet 15 Sedghi, Shaban 14 Choudhury, Binayak Samadder 14 Rezapour, Shahram 13 Beg, Ismat 13 Shoaib, Abdullah 13 Shukla, Satish 13 Younis, Mudasir 12 Chauhan, Sunny 12 de la Sen, Manuel 12 Rakočević, Vladimir 12 Rao, Koduru Pandu Ranga 12 Şahin, Hakan 12 Zhu, Chuanxi 11 Agarwal, Ravi P. 11 Aslantaş, Mustafa 11 Cai, Zuowei 11 Huang, Lihong 11 Mitrović, Zoran D. 11 Mustafa, Zead 11 Postolache, Mihai 11 Roshan, Jamal Rezaei 11 Singh, Deepak Kumar 11 Ur Rehman, Saif 10 Acar, Özlem 10 Ćirić, Ljubomir B. 10 Jleli, Mohamed Boussairi 10 Kalyani, Karusala 10 Kamran, Tayyab 10 Kutbi, Marwan Amin 10 Park, Choonkil 10 Sarwar, Muhammad 10 Shahzad, Naseer 9 Gopal, Dhananjay 9 Kang, Shin Min 9 Liu, Zeqing 9 Turkoglu, Duran 8 Arab, Reza 8 Azam, Akbar 8 Cho, Yeol Je 8 Gupta, Vishal 8 Metiya, Nikhilesh 8 Popa, Valeriu 7 Ansari, Arslan Hojat 7 Damjanović, Boško 7 Das, Anupam 7 Erduran, Ali 7 Gubran, Rqeeb 7 Hussain, Aftab 7 Khan, Sami Ullah 7 Olgun, Murat 7 Sadarangani, Kishin B. 7 Salimi, Peyman 7 Shagari, Mohammed Shehu 7 Vetro, Pasquale 6 Ahmad, Jamshaid 6 Alansari, Monairah Omar 6 Amini-Harandi, Alireza 6 Hazarika, Bipan 6 Hussain, Azhar 6 Iqbal, Iram 6 Kishore, Gajula Naveen Venkata 6 Mani, Naveen 6 Mehmood, Nayyar 6 Mukheimer, Aiman A. S. 6 Nguyen Van Luong 6 Rasham, Tahair 6 Razani, Abdolrahman 6 Saadati, Reza 6 Silvestrov, Sergei D. 6 Vetro, Francesca 6 Wu, Zhaoqi 5 Alfaqih, Waleed Mohd. 5 Ali, Basit 5 Alsulami, Hamed Hamdan 5 Alsulami, Saud Mastour A. 5 Ameer, Eskandar 5 Barakat, Mohamed A. 5 Chandok, Sumit 5 Chen, Chunfang 5 Došenović, Tatjana ...and 960 more Authors all top 5 Cited in 166 Serials 164 Fixed Point Theory and Applications 56 Abstract and Applied Analysis 49 Journal of Function Spaces 40 Journal of Inequalities and Applications 34 Journal of Fixed Point Theory and Applications 27 Journal of Nonlinear Science and Applications 24 Advances in Difference Equations 21 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 19 International Journal of Mathematics and Mathematical Sciences 19 Nonlinear Analysis. Modelling and Control 18 Filomat 16 Computers & Mathematics with Applications 16 Thai Journal of Mathematics 15 Nonlinear Analysis. 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