Abstract
There have been many attempts to generalize the definition of a metric space in order to obtain possibilities for more general fixed point results. In this paper, we give a survey of recent results on reducing fixed point theorems on generalized metric spaces to fixed point theorems on metric spaces and then investigate this fact in other generalized metric spaces. We show that many generalized metric spaces are topologically equivalent to certain metric spaces or to previously generalized metric spaces. Also, the fixed point theory in these generalized metric spaces may be a consequence of the fixed point theory in certain metric spaces or in previously generalized metric spaces.
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References
Abbas, M., Jungck, G.: Common fixed point results for noncommuting mappings without continuity in cone metric spaces. J. Math. Anal. Appl. 341, 416–420 (2008)
Abbas, M., Nazir, T., Radenović, S.: Some periodic point results in generalized metric spaces. Appl. Math. Comput. 217, 4094–4099 (2010)
Abbas, M., Rajić, V. C., Nazir, T., Radenović, S.: Common fixed point of mappings satisfying rational inequalities in ordered complex valued generalized metric spaces. Afr. Mat. 1–14 (2014). doi:10.1007/s13370-013-0185-z
Abbas, M., Rhoades, B.E.: Common fixed point results for noncommuting mappings without continuity in generalized metric spaces. Appl. Math. Comput. 215, 262–269 (2009)
Abdeljawad, T.: Fixed points for generalized weakly contractive mappings in partial metric spaces. Math. Comput. Model. 54, 2923–2927 (2011)
Abdeljawad, T., Karapinar, E., Tas, K.: Existence and uniqueness of a common fixed point on partial metric spaces. Comput. Math. Appl. 24, 1900–1904 (2011)
Abdeljawad, T., Karapinar, E., Tas, K.: A generalized contraction principle with control functions on partial metric spaces. Comput. Math. Appl. 63, 716–719 (2012)
Agarwal, R.P., Kadelburg, Z., Radenović, S.: On coupled fixed point results in asymmetric \(G\)-metric spaces. J. Inequal. Appl. 2013(528), 1–12 (2013)
Agarwal, R.P., Karapinar, E.: Remarks on some coupled fixed point theorems in \(G\)-metric spaces. Fixed Point Theory Appl. 2013(2), 1–33 (2013)
Agarwal, R.P., Meehan, M., O’Regan, D.: Fixed Point Theory and Applications. Cambridge University Press, Cambridge (2004)
Aghajani, A., Abbas, M., Roshan, J.R.: Common fixed point of generalized weak contractive mappings in partially ordered \(G_b\)-metric spaces. Filomat (2014) (accepted paper)
Ahmed, A.E.S., Omran, S., Asad, A.J.: Fixed point theorems in quaternion-valued metric spaces. Abstr. Appl. Anal. 2014, 1–9 (2014)
Akkouchi, M.: Common fixed points of four maps using generalized weak contractivity and well-posedness. Int. J. Nonlinear Anal. Appl. 2, 73–81 (2011)
Alghamdi, M.A., Hussain, N., Salimi, P.: Fixed point and coupled fixed point theorems on \(b\)-metric-like spaces. J. Inequal. Appl. 2013(402), 1–25 (2013)
Aliouche, A., Simpson, C.: Fixed points and lines in 2-metric spaces. Adv. Math. 229, 668–690 (2012)
Altun, I., Durmaz, G.: Weak partial metric spaces and some fixed point results. Appl. Gen. Topol. 13, 179–191 (2012)
Altun, I., Sola, F., Simsek, H.: Generalized contractions on partial metric spaces. Topol. Appl. 157, 2778–2785 (2010)
Amini-Harandi, A.: Metric-like spaces, partial metric spaces and fixed points. Fixed Point Theory Appl. 2012(204), 1–11 (2012)
Amini-Harandi, A., Fakhar, M.: Fixed point theory in cone metric spaces obtained via the scalarization method. Comput. Math. Appl. 59, 3529–3534 (2010)
An, T.V., Dung, N.V., Hang, V.T.L.: A new approach to fixed point theorems on \(G\)-metric spaces. Topol. Appl. 160, 1486–1493 (2013)
Asadi, M., Karapinar, E., Salimi, P.: A new approach to \(G\)-metric and related fixed point theorems. J. Inequal. Appl. 2013(454), 1–14 (2013)
Asadi, M., Karapinar, E., Salimi, P.: New extension of \(p\)-metric spaces with some fixed-point results on \(M\)-metric spaces. J. Inequal. Appl. 2014(18), 1–9 (2014)
Asadi, M., Vaezpour, S.M., Rhoades, B.E., Soleimani, H.: Metrizability of cone metric spaces via renorming the Banach spaces. Nonlinear Anal. Appl. 2012, 1–5 (2012)
Aydi, H., Postolache, M., Shatanawi, W.: Coupled fixed point results for \((\psi,\phi )\)-weakly contractive mappings in ordered \(G\)-metric spaces. Comput. Math. Appl. 63, 298–309 (2012)
Aydi, H., Shatanawi, W., Vetro, C.: On generalized weakly \(G\)-contraction mapping in \(G\)-metric spaces. Comput. Math. Appl. 62, 4222–4229 (2011)
Azam, A., Arshad, M., Beg, I.: Banach contraction principle on cone rectangular metric spaces. Appl. Anal. Discrete Math. 3, 236–241 (2009)
Azam, A., Fisher, B., Khan, M.: Common fixed point theorems in complex valued metric spaces. Numer. Funct. Anal. Optim. 32, 243–253 (2011)
Bakhtin, I.A.: The contraction principle in quasimetric spaces. Func. An. Ulianowsk Gos. Ped. Ins. 30, 26–37 (1989). (in Russian)
Banach, S.: Sur les opérations dans les ensembles abstraits et leur applications aux équations intégrales. Fundam. Math. 3, 133–181 (1922)
Beg, I., Abbas, M., Nazir, T.: Generalized cone metric spaces. J. Nonlinear Sci. Appl. 3, 21–31 (2010)
Beg, I., Azam, A., Arshad, M.: Common fixed points for maps on topological vector space valued cone metric spaces. Int. J. Math. Math. Sci. 2009, 1–8 (2009)
Berinde, V.: A common fixed point theorem for compatible quasi contractive self mappings in metric spaces. Appl. Math. Comput. 213, 348–354 (2009)
Bianchini, R.M.T.: Su un problema di S. Reich aguardante la teoria dei punti fissi. Boll. Un. Mat. Ital. 5, 103–108 (1972)
Branciari, A.: A fixed point theorem of Banach–Caccioppoli type on a class of generalized metric spaces. Publ. Math. Debrecen 57, 31–37 (2000)
Bukatin, M., Kopperman, R., Matthews, S., Pajoohesh, H.: Partial metric spaces. Am. Math. Mon. 116, 708–718 (2009)
Bumbariu, O.: An acceleration technique for slowly convergent fixed point iterative methods. Miskolc Math. Notes 13, 271–281 (2012)
Caristi, J.: Fixed point theorems for mappings satisfying inwardness condition. Trans. Am. Math. Soc. 215, 241–251 (1976)
Chaipunya, P., Kumam, P.: On the distance between three arbitrary points. J. Funct. Spaces Appl. 2013, 1–7 (2013)
Chandok, S., Kumar, D.: Some common fixed point results for rational type contraction mappings in complex valued metric spaces. J. Oper. 2013, 1–6 (2013)
Cho, Y.J., Khan, M.S., Singh, S.L.: Common fixed points of weakly commuting mappings. Univ. u Novom Sadu, Zb. Rad. Prirod.-Mat. Fak. Ser. Mat. 18, 129–142 (1988)
Choudhurya, B.S., Konar, P., Rhoades, B.E., Metiya, N.: Fixed point theorems for generalized weakly contractive mappings. Nonlinear Anal. 74, 2116–2126 (2011)
Ćirić, L.B.: A generalization of Banach’s contraction principle. Proc. Am. Math. Soc. 45, 267–273 (1974)
Ćirić, L.B., Samet, B., Aydi, H., Vetro, C.: Common fixed points of generalized contractions on partial metric spaces and an application. Appl. Math. Comput. 218, 2398–2406 (2011)
Collaço, P., Silva, J.C.E.: A complete comparison of 25 contraction conditions. Nonlinear Anal. 30, 471–476 (1997)
Czerwik, S.: Contraction mappings in \(b\)-metric spaces. Acta Math. Univ. Ostrav. 1, 5–11 (1993)
Das, K.M., Naik, K.V.: Common fixed point theorems for commuting maps on a metric space. Proc. Am. Math. Soc. 77, 369–373 (1979)
Dhage, B.C.: A study of some fixed point theorems. Ph.D. thesis, Marathwada, Aurangabad (1984)
Dhage, B.C.: On generalized metric spaces and topological structure II. Pure Appl. Math. Sci. XXXX(1–2), 37–41 (1994)
Dhage, B.C.: Generalized metric spaces and topological structure I. An. Ştiinţ. Univ. Al. I. Cuza Iaşi. Mat. (N.S.) 46, 3–24 (2000)
Ding, H.S., Jovanović, M., Kadelburg, Z., Radenović, S.: Common fixed point results for generalized quasicontractions in \(tvs\)-cone metric spaces. J. Comput. Appl. Math. 15, 463–470 (2013)
Du, W.S.: A note on cone metric fixed point theory and its equivalence. Nonlinear Anal. 72, 2259–2261 (2010)
Du, W.S., Karapinar, E.: A note on \(b\)-cone metric and its related results: generalizations or equivalence? Fixed Point Theory Appl. 2013(210), 1–6 (2013)
Dung, N.V.: Remarks on quasi-metric spaces. Miskolc Math. Notes (2014) (accepted paper)
Dung, N.V., Hang, V.T.L.: Remarks on partial \(b\)-metric spaces and fixed point theorems. Mat. Vesnik (2014) (submitted)
Dung, N.V., Hang, V.T.L.: A note on partial rectangular metric spaces. Math. Morav. 18, 1–8 (2014)
Dung, N.V., Hang, V.T.L., Sedghi, S.: Remarks on metric-type spaces and applications. Asian Bull. Math. (submitted)
Dung, N.V., Hieu, N.T., Hang, V.T.L.: A simple approach to fixed point theorems on metric-like spaces. Le Matematiche (submitted)
Dung, N.V., Hieu, N.T., Ly, N.T.T., Thinh, V.D.: Remarks on the fixed point problem of 2-metric spaces. Fixed Point Theory Appl. 2013(167), 1–7 (2013)
Durmaz, G., Acar, Ö., Altun, I.: Some fixed point results on weak partial metric spaces. Filomat 27, 317–326 (2013)
Dutta, P.N., Choudhury, B.S.: A generalisation of contraction principle in metric spaces. Fixed Point Theory Appl. 2008, 1–8 (2008)
Edelstein, M.: An extension of Banach’s contraction principle. Proc. Am. Math. Soc. 12, 7–10 (1961)
Edelstein, M.: On fixed and periodic points under contractive mappings. J. Lond. Math. Soc. 37, 74–79 (1962)
Feng, Y., Mao, W.: The equivalence of cone metric spaces and metric spaces. Fixed Point Theory 11, 259–264 (2010)
Fréchet, M.: La notion d’écart et le calcul fonctionel. C. R. Acad. Sci. Paris 140, 772–774 (1905)
Gähler, V.S.: 2-Metrische Räume und ihre topologische struktur. Math. Nachr. 26, 115–118 (1963/1964)
Geraghty, M.A.: On contractive mappings. Proc. Am. Math. Soc. 40(2), 604–608 (1973)
Haghi, R.H., Rezapour, S., Shahzad, N.: Be careful on partial metric fixed point results. Topol. Appl. 160, 450–454 (2013)
Heckmann, R.: Approximation of metric spaces by partial metric spaces. Appl. Categ. Struct. 7, 71–83 (1999)
Hitzler, P., Seda, A.: Mathematical Aspects of Logic Programming Semantics. Chapman & Hall/CRC Studies in Informatic Series, CRC Press, Boca Raton (2011)
Hsiao, C.R.: A property of contractive type mappings in 2-metric spaces. Jnanabha 16, 223–239 (1986)
Huang, L.G., Zhang, X.: Cone metric spaces and fixed point theorems of contractive mappings. J. Math. Anal. Appl. 332, 1468–1476 (2007)
Hussain, N., Roshan, J.R., Parvaneh, V., Latif, A.: A unification of G-metric, partial metric and b-metric spaces. Abstr. Appl. Anal. 2014, 1–9 (2014) (article ID 180698)
Hussain, N., Shah, M.H.: KKM mappings in cone b-metric spaces. Comput. Math. Appl. 62, 1677–1684 (2011)
Huy, N.B., Thanh, T.D.: Fixed point theorems and the Ulam–Hyers stability in non-Archimedean cone metric spaces. J. Math. Anal. Appl. 414, 10–20 (2014)
Ilić, D., Rakočević, V.: Common fixed points for maps on a cone metric space. J. Math. Anal. Appl. 341, 876–882 (2008)
Iseki, K.: Fixed point theorems in 2-metric spaces, Math. Seminar Notes, Kobe Univ. 3, 133–136 (1975)
Janković, S., Kadelburg, Z., Radenović, S.: On cone metric spaces: a survey. Nonlinear Anal. 74, 2591–2601 (2011)
Jleli, M., Karapinar, E., Samet, B.: Further remarks on fixed-point theorems in the context of partial metric spaces. Abstr. Appl. Anal. 2013, 1–6 (2013)
Jleli, M., Samet, B.: Remarks on \(G\)-metric spaces and fixed point theorems. Fixed Point Theory Appl. 2012(201), 1–10 (2012)
Jungck, G., Radenović, S., Radojević, S., Rakočević, V.: Common fixed point theorems for weakly compatible pairs on cone metric spaces. Fixed Point Theory Appl. 2009, 1–13 (2009)
Kadelburg, Z., Nashine, H.K., Radenović, S.: Common coupled fixed point results in partially ordered \(G\)-metric spaces. Bull. Math. Anal. Appl. 2, 51–63 (2012)
Kadelburg, Z., Radenović, S.: On generalized metric spaces: a survey. TWMS J. Pure Appl. Math. 5(1), 3–13 (2014)
Kadelburg, Z., Radenović, S., Rakočević, V.: Topological vector space-valued cone metric spaces and fixed point theorems. Fixed Point Theory Appl. 2010, 1–17 (2010)
Kadelburg, Z., Radenović, S., Rakočević, V.: A note on the equivalence of some metric and cone metric fixed point results. Appl. Math. Lett. 24, 370–374 (2011)
Kannan, R.: Some results on fixed points II. Am. Math. Mon. 76, 405–408 (1969)
Karapinar, E., Agarwal, R.P.: Further remarks on \(G\)-metric spaces. Fixed Point Theory Appl. 2013(154), 1–14 (2013)
Karapinar, E., Erhan, I.M., Öztürk, A.: Fixed point theorems on quasi-partial metric spaces. Math. Comput. Model. 57, 2442–2448 (2013)
Karapinar, E., Yüksel, U.: Some common fixed point theorems in partial metric spaces. J. Appl. Math. 2011, 1–16 (2011)
Khamsi, M.A.: Remarks on cone metric spaces and fixed point theorems of contractive mappings. Fixed Point Theory Appl. 2010, 1–7 (2010)
Khamsi, M.A., Hussain, N.: KKM mappings in metric type spaces. Nonlinear Anal. 7(9), 3123–3129 (2010)
Khamsi, M.A., Wojciechowski, J.: On the additivity of the Minkowski functionals. Numer. Funct. Anal. Optim. 34, 635–647 (2013)
Khani, M., Pourmahdian, M.: On the metrizability of cone metric spaces. Topol. Appl. 158, 190–193 (2011)
Kopperman, R., Matthews, S., Pajoohesh, H.: Partial metrizability in value quantales. Appl. Gen. Topol. 5(1), 115–127 (2004)
Kumam, P., Dung, N.V.: Remarks on generalized metric spaces in the Branciari’s sense. Sarajevo J. Math. (2014) (accepted paper)
Kumam, P., Dung, N.V., Hang, V.T.L.: Some equivalences between cone \(b\)-metric spaces and \(b\)-metric spaces. Abstr. Appl. Anal. 2013, 1–8 (2013)
Künzi, H.-P.A., Pajoohesh, H., Schellekens, M.P.: Partial quasi-metrics. Theoret. Comput. Sci. 365, 237–246 (2006)
Kurepa, Đ.R.: Tableaux ramifi’es d’ensembles. C. R. Acad. Sci. Paris 198, 1563–1565 (1934)
Lahiri, B.K., Das, P., Dey, L.K.: Cantor’s theorem in 2-metric spaces and its applications to fixed point problems. Taiwan. J. Math. 15, 337–352 (2011)
Malhotra, S.K., Shukla, S., Sen, R., Verma, N.: Generalizaton of fixed point theorems in partial cone metric spaces. Int. J. Math. Arch. 2, 610–616 (2011)
Matthews, S.G.: Partial metric topology, Papers on general topology and applications. In: Proceedings of 8th Summer Conference. Queen’s College (1992)
Matthews, S.G.: Partial metric topology. Ann. N. Y. Acad. Sci. 728, 183–197 (1994)
Mukheimer, A.A.: Some common fixed point theorems in complex valued \(b\)-metric spaces. Sci. World J. 2014, 1–6 (2014) (article ID 587825)
Mustafa, Z., Aydi, H., Karapinar, E.: On common fixed points in \(G\)-metric spaces using (E.A) property. Comput. Math. Appl. 64, 1944–1956 (2012)
Mustafa, Z., Obiedat, H., Awawdeh, F.: Some fixed point theorem for mapping on complete \(G\)-metric spaces. Fixed Point Theory Appl. 2008, 1–12 (2008)
Mustafa, Z., Parvaneh, V., Roshan, J.R., Kadelburg, Z.: \(b_2\)-metric spaces and some fixed point theorems (submitted)
Mustafa, Z., Roshan, J.R., Parvaneh, V.: Coupled coincidence point results for \((\psi,\varphi )\)-weakly contractive mappings in partially ordered \(G_{b}\)-metric spaces. Fixed Point Theory Appl. 2013(206), 1–19 (2013)
Mustafa, Z., Roshan, J.R., Parvaneh, V., Kadelburg, Z.: Some common fixed point results in ordered partial b-metric spaces. J. Inequal. Appl. 2013(562), 1–26 (2013)
Mustafa, Z., Sims, B.: Some remarks concerning \(D\)-metric spaces. In: Proceedings of the International Conferences on Fixed Point Theory and Applications (Valencia, Spain), pp. 189–198 (2003)
Mustafa, Z., Sims, B.: A new approach to generalized metric spaces. J. Nonlinear Convex Anal. 7(2), 289–297 (2006)
Mustafa, Z., Sims, B.: Fixed point theorems for contractive mappings in complete \(G\)-metric spaces. Fixed Point Theory Appl. 2009, 1–10 (2009)
Naidu, S.V.R., Prasad, J.R.: Fixed point theorems in 2-metric spaces. Indian J. Pure App. Math. 17, 974–993 (1986)
Naidu, S.V.R., Rao, K.P.R., Rao, N.S.: On the concepts of balls in a \(D\)-metric space. Int. J. Math. Math. Sci. 2005, 133–141 (2005)
Nashine, H.K., Kadelburg, Z., Radenović, S.: Fixed point theorems via various cyclic contractive conditions in partial metric spaces. Publ. Inst. Math. (Beograd) (N.S.) 93, 69–93 (2013)
Popović, B., Radenović, S., Shukla, S.: Fixed point results to \(tvs\)-cone \(b\)-metric spaces. Gulf J. Math 1, 51–64 (2013)
Proinov, P.D.: A unified theory of cone metric spaces and its applications to the fixed point theory. Fixed Point Theory Appl. 2013(103), 1–41 (2013)
Radenović, S., Kadelburg, Z.: Quasi-contractions on symmetric and cone symmetric spaces. Banach J. Math. Anal. 5, 38–50 (2011)
Rakotch, E.: A note on contractive mappings. Proc. Am. Math. Soc 13, 459–465 (1962)
Rezapour, S., Hamlbarani, R.: Some notes on the paper “Cone metric spaces and fixed point theorems of contractive mappings”. J. Math. Anal. Appl. 345, 719–724 (2008)
Rhoades, B.E.: A comparison of various definition of contractive mappings. Trans. Am. Math. Soc. 226, 257–290 (1977)
Roldán, A., Karapinar, E.: Some multidimensional fixed point theorems on partially preordered \(G^{*}\)-metric spaces under \((\psi,\varphi )\)-contractivity conditions. Fixed Point Theory Appl. 2013(158), 1–21 (2013)
Romaguera, S.: A Kirk type characterization of completeness for partial metric spaces. Fixed Point Theory Appl. 2010, 1–6 (2010)
Romaguera, S., Schellekens, M.: Quasi-metric properties of complexity spaces. Topol. Appl. 98, 311–322 (1999)
Rouzkard, F., Imdad, M.: Some common fixed point theorems on complex valued metric spaces. Comput. Math. Appl. 64, 1866–1874 (2012)
Rus, I.A.: Fixed point theory in partial metric spaces. An. Univ. Vest Timiş Ser. Mat. Inform. XLVI, 149–160 (2008)
Salimi, P., Vetro, P.: A result of Suzuki type in partial \(G\)-metric spaces. Acta Math. Sci. Ser. B Engl. Ed. 34B, 274–284 (2014)
Samet, B., Vetro, C., Vetro, F.: Remarks on \(G\)-metric spaces. Int. J. Anal. 2013, 1–6 (2013)
Samet, B., Vetro, C., Vetro, F.: From metric spaces to partial metric spaces. Fixed Point Theory Appl. 2013(5), 1–11 (2013)
Sastry, K.P.R., Naidu, G.A., Bekeshie, T.: Metrizability of complex valued metric spaces and some remarks on fixed point theorems in complex valued metric spaces. Int. J. Pure Appl. Math. 3, 2686–2690 (2012)
Schellekens, M.: On upper weightable spaces. Ann. N. Y. Acad. Sci. 806, 348–363 (2002)
Sedghi, S., Shobe, N., Aliouche, A.: A generalization of fixed point theorem in \(S\)-metric spaces. Mat. Vesnik 64, 258–266 (2012)
Sedghi, S., Shobe, N., Zhou, H.: A common fixed point theorem in \(D^*\)-metric spaces. Fixed Point Theory Appl. 2007, 1–13 (2007)
Shah, M.H., Hussain, N.: Nonlinear contractions in partially ordered quasi \(b\)-metric spaces. Commun. Korean Math. Soc. 27, 117–128 (2012)
Shatanawi, W.: Fixed point theory for contractive mapping satisfying \(\Phi \)-maps in \(G\)-metric spaces. Fixed Point Theory Appl. 2010, 1–9 (2010)
Shukla, S.: Partial rectangular metric spaces and fixed point theorems. Sci. World J. 2014, 1–7 (2014)
Shukla, S.: Partial \(b\)-metric spaces and fixed point theorems. Mediterr. J. Math. 11, 703–711 (2014)
Sintunavarat, W., Kumam, P.: Generalized common fixed point theorems in complex valued metric spaces and applications. J. Inequal. Appl. 2012(84), 1–12 (2012)
Sitthikul, K., Saejung, S.: Some fixed point theorems in complex valued metric space. Fixed Point Theory Appl. 2012(189), 1–15 (2012)
Smyth, M.B.: Completeness of quasi-uniform and syntopological spaces. J. Lond. Math. Soc. 49, 385–400 (1994)
Turinici, M.: Contractive maps in Mustafa–Sims metric spaces. 1–12 (2013). arXiv:1309.3702v1
Vandergraft, J.S.: Newton’s method for convex operators in partially ordered spaces. SIAM J. Numer. Anal. 4, 406–432 (1967)
Zabrejko, P.P.: \(K\)-metric and \(K\)-normed linear spaces: survey. Collect. Math. 48, 825–859 (1997)
Zand, M.R.A., Nezhad, A.D.: A generalization of partial metric spaces. J. Contemp. Appl. Math. 24, 86–93 (2011)
Zhu, L., Zhu, C.X., Chen, C.F., Stojanović, Ž.: Multidimensional fixed points for generalized \(\psi \)-quasi-contractions in quasi-metric-like spaces. J. Inequal. Appl. 2014(27), 1–19 (2014)
Acknowledgments
The authors sincerely thank referees for their valuable comments on revising the paper. Also, the authors sincerely thank The Dong Thap Seminar on Mathematical Analysis and Applications for discussing partly this article and thank Prof. S. Sedghi, Islamic Azad University, Iran; Prof. D. Wardowski, University of Łodź, Poland; Prof. P. Kumam, King Mongkut’s University of Technology Thonburi, Thailand; Prof. Z. Mustafa, The Hashemite University, Jordan; Prof. E. Karapinar, Atilim University, Turkey for their helps. The third and fourth authors are grateful to Ministry of Education, Science and Technological Development of Serbia.
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Van An, T., Van Dung, N., Kadelburg, Z. et al. Various generalizations of metric spaces and fixed point theorems. RACSAM 109, 175–198 (2015). https://doi.org/10.1007/s13398-014-0173-7
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DOI: https://doi.org/10.1007/s13398-014-0173-7