{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T03:28:50Z","timestamp":1760239730810,"version":"build-2065373602"},"reference-count":31,"publisher":"MDPI AG","issue":"12","license":[{"start":{"date-parts":[[2020,12,10]],"date-time":"2020-12-10T00:00:00Z","timestamp":1607558400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Symmetry"],"abstract":"<jats:p>Many authors used the concept of F\u2212contraction introduced by Wardowski in 2012 in order to define and prove new results on fixed points in complete metric spaces. In some later papers (for example Proinov P.D., J. Fixed Point Theory Appl. (2020)22:21, doi:10.1007\/s11784-020-0756-1) it is shown that conditions (F2) and (F3) are not necessary to prove Wardowski\u2019s results. In this article we use a new approach in proving that the Picard\u2013Jungck sequence is a Cauchy one. It helps us obtain new Jungck\u2013Fisher\u2013Wardowski type results using Wardowski\u2019s condition (F1) only, but in a way that differs from the previous approaches. Along with that, we came to several new contractive conditions not known in the fixed point theory so far. With the new results presented in the article, we generalize, extend, unify and enrich methods presented in the literature that we cite.<\/jats:p>","DOI":"10.3390\/sym12122048","type":"journal-article","created":{"date-parts":[[2020,12,10]],"date-time":"2020-12-10T22:15:36Z","timestamp":1607638536000},"page":"2048","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":7,"title":["On Some New Jungck\u2013Fisher\u2013Wardowski Type Fixed Point Results"],"prefix":"10.3390","volume":"12","author":[{"given":"Jelena","family":"Vujakovi\u0107","sequence":"first","affiliation":[{"name":"Department of Mathematics, Faculty of Sciences, University of Pri\u0161tina-Kosovska Mitrovica, Lole Ribara 29, 38200 Kosovska Mitrovica, Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8546-571X","authenticated-orcid":false,"given":"Eugen","family":"Ljajko","sequence":"additional","affiliation":[{"name":"Department of Mathematics, Faculty of Sciences, University of Pri\u0161tina-Kosovska Mitrovica, Lole Ribara 29, 38200 Kosovska Mitrovica, Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1845-4441","authenticated-orcid":false,"given":"Slobodan","family":"Radojevi\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, 11120 Beograd, Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Stojan","family":"Radenovi\u0107","sequence":"additional","affiliation":[{"name":"Faculty of Mechanical Engineering, University of Belgrade, Kraljice Marije 16, 11120 Beograd, Serbia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2020,12,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1080\/00029890.1976.11994093","article-title":"Commuting maps and fixed points","volume":"83","author":"Jungck","year":"1976","journal-title":"Am. 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A Matem\u00e1ticas"}],"container-title":["Symmetry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2073-8994\/12\/12\/2048\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T10:43:32Z","timestamp":1760179412000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2073-8994\/12\/12\/2048"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,12,10]]},"references-count":31,"journal-issue":{"issue":"12","published-online":{"date-parts":[[2020,12]]}},"alternative-id":["sym12122048"],"URL":"https:\/\/doi.org\/10.3390\/sym12122048","relation":{},"ISSN":["2073-8994"],"issn-type":[{"type":"electronic","value":"2073-8994"}],"subject":[],"published":{"date-parts":[[2020,12,10]]}}}