{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T00:18:31Z","timestamp":1785370711334,"version":"3.55.0"},"reference-count":27,"publisher":"Springer Science and Business Media LLC","issue":"2","license":[{"start":{"date-parts":[[2020,11,17]],"date-time":"2020-11-17T00:00:00Z","timestamp":1605571200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2020,11,17]],"date-time":"2020-11-17T00:00:00Z","timestamp":1605571200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Period Math Hung"],"published-print":{"date-parts":[[2021,12]]},"DOI":"10.1007\/s10998-020-00371-w","type":"journal-article","created":{"date-parts":[[2020,11,17]],"date-time":"2020-11-17T20:18:52Z","timestamp":1605644332000},"page":"111-121","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["James type constants and fixed points for multivalued nonexpansive mappings"],"prefix":"10.1007","volume":"83","author":[{"given":"Zhan-fei","family":"Zuo","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,11,17]]},"reference":[{"issue":"340","key":"371_CR1","doi-asserted-by":"publisher","first-page":"1271","DOI":"10.1016\/j.jmaa.2007.09.040","volume":"2","author":"J Alonso","year":"2008","unstructured":"J. Alonso, E. Llorens-Fuster, Geometric mean and triangles inscribed in a semicircle in Banach spaces. J. Math. Anal. Appl. 2(340), 1271\u20131283 (2008)","journal-title":"J. Math. Anal. Appl."},{"key":"371_CR2","doi-asserted-by":"publisher","first-page":"958","DOI":"10.1016\/j.na.2005.05.051","volume":"64","author":"S Dhompongsa","year":"2006","unstructured":"S. Dhompongsa, A. Kaewcharoen, A. Kaewkhao, The Dom\u00ednguez-Lorenzo condition and multivalued nonexpansive mappings. Nonlinear Anal. 64, 958\u2013970 (2006)","journal-title":"Nonlinear Anal."},{"key":"371_CR3","first-page":"835","volume":"22","author":"T Dom\u00ednguez Benavides","year":"1996","unstructured":"T. Dom\u00ednguez Benavides, A geometrical coefficient implying the fixed point property and stability results. Houst. J. Math. 22, 835\u2013849 (1996)","journal-title":"Houst. J. Math."},{"key":"371_CR4","first-page":"37","volume":"58","author":"T Dom\u00ednguez Benavides","year":"2004","unstructured":"T. Dom\u00ednguez Benavides, P. Lorenzo Ram\u00edrez, Asymptotic centers and fixed points for multivalued nonexpansive mappings. Anal. Univ. Marie Curie Sklodowska 58, 37\u201345 (2004)","journal-title":"Anal. Univ. Marie Curie Sklodowska"},{"issue":"2006","key":"371_CR5","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1155\/JIA\/2006\/94982","volume":"1","author":"J Gao","year":"2006","unstructured":"J. Gao, A Pythagorean approach in Banach spaces. Journal of Inequalities and Applications 1(2006), 1\u201311 (2006)","journal-title":"Journal of Inequalities and Applications"},{"issue":"339","key":"371_CR6","doi-asserted-by":"publisher","first-page":"680","DOI":"10.1016\/j.jmaa.2007.07.015","volume":"1","author":"B Gavira","year":"2008","unstructured":"B. Gavira, Some geometric conditions which imply the fixed point property for multivalued nonexpansive mappings. J. Math. Anal. Appl. 1(339), 680\u2013690 (2008)","journal-title":"J. Math. Anal. Appl."},{"issue":"10","key":"371_CR7","first-page":"587","volume":"7","author":"A Jim\u00e9nez-Melado","year":"1996","unstructured":"A. Jim\u00e9nez-Melado, E. Llorens-Fuster, The fixed point property for some uniformly nonsquare Banach spaces. Boll. Unione Mat. Ital. Sez. A 7(10), 587\u2013595 (1996)","journal-title":"Boll. Unione Mat. Ital. Sez. A"},{"key":"371_CR8","doi-asserted-by":"publisher","first-page":"355","DOI":"10.1090\/S0002-9939-05-08362-0","volume":"134","author":"A Jim\u00e9nez-Melado","year":"2006","unstructured":"A. Jim\u00e9nez-Melado, E. Llorens-Fuster, S. Saejung, The von Neumann-Jordan constant, weak orthogonality and normal structure in Banach spaces. Proc. Am. Math. Soc. 134, 355\u2013364 (2006)","journal-title":"Proc. Am. Math. Soc."},{"issue":"333","key":"371_CR9","doi-asserted-by":"publisher","first-page":"950","DOI":"10.1016\/j.jmaa.2006.12.001","volume":"2","author":"A Kaewkhao","year":"2007","unstructured":"A. Kaewkhao, The James constant, the Jordan-von Neumann constant, weak orthogonality and fixed points for multivalued mappings. J. Math. Anal. Appl. 2(333), 950\u2013958 (2007)","journal-title":"J. Math. Anal. Appl."},{"key":"371_CR10","doi-asserted-by":"publisher","first-page":"1004","DOI":"10.2307\/2313345","volume":"72","author":"WA Kirk","year":"1965","unstructured":"W.A. Kirk, A fixed point theorem for mappings which do not increase distances. Am. Math. Monthly. 72, 1004\u20131006 (1965)","journal-title":"Am. Math. Monthly."},{"issue":"72","key":"371_CR11","doi-asserted-by":"publisher","first-page":"3984","DOI":"10.1016\/j.na.2010.01.030","volume":"11","author":"E Llorens-Fuster","year":"2010","unstructured":"E. Llorens-Fuster, E. Mazcu\u00f1\u00e1n-Navarro, S. Reich, The Ptolemy and Zb$$\\breve{a}$$ganu constants of normed spaces. Nonlinear Anal. 11(72), 3984\u20133993 (2010)","journal-title":"Nonlinear Anal."},{"key":"371_CR12","doi-asserted-by":"publisher","first-page":"197","DOI":"10.1016\/j.jmaa.2007.03.079","volume":"337","author":"E Mazcu\u00f1\u00e1n-Navarro","year":"2008","unstructured":"E. Mazcu\u00f1\u00e1n-Navarro, Banach spaces properties sufficient for normal structure. J. Math. Anal. Appl. 337, 197\u2013218 (2008)","journal-title":"J. Math. Anal. Appl."},{"key":"371_CR13","doi-asserted-by":"publisher","first-page":"475","DOI":"10.2140\/pjm.1969.30.475","volume":"30","author":"S Nadler Jr","year":"1969","unstructured":"S. Nadler Jr., Multivalued contraction mappings. Pacific J. Math. 30, 475\u2013488 (1969)","journal-title":"Pacific J. Math."},{"key":"371_CR14","first-page":"26","volume":"5","author":"S Reich","year":"1972","unstructured":"S. Reich, Fixed points of contractive functions. Boll. Un. Mat. Ital. 5, 26\u201342 (1972)","journal-title":"Boll. Un. Mat. Ital."},{"key":"371_CR15","first-page":"194","volume":"57","author":"S Reich","year":"1974","unstructured":"S. Reich, Some fixed point problems. Atti Accad. Naz. Lincei 57, 194\u2013198 (1974)","journal-title":"Atti Accad. Naz. Lincei"},{"key":"371_CR16","doi-asserted-by":"publisher","first-page":"104","DOI":"10.1016\/0022-247X(78)90222-6","volume":"62","author":"S Reich","year":"1978","unstructured":"S. Reich, Approximate selections, best approximations, fixed points and invariant sets. J. Math. Anal. Appl. 62, 104\u2013113 (1978)","journal-title":"J. Math. Anal. Appl."},{"key":"371_CR17","doi-asserted-by":"publisher","first-page":"179","DOI":"10.1090\/conm\/021\/729515","volume":"21","author":"S Reich","year":"1983","unstructured":"S. Reich, Some problems and results in fixed point theory. Contemp. Math. 21, 179\u2013187 (1983)","journal-title":"Contemp. Math."},{"key":"371_CR18","unstructured":"Y. Takahashi, Some geometric constants of Banach spaces\u2013a unified approach, in: Banach and Function Spaces II. in Proc. International Symposium (ISBFS 2006) held in Kitakyushu (Sept. 14\u201317, 2006), Edited by Mikio Kato and Lech Maligranda, Yokohama Publ., Yokohama pp 191\u2013220 (2008)"},{"key":"371_CR19","first-page":"26","volume":"389","author":"H Xu","year":"2000","unstructured":"H. Xu, Metric fixed point theory for multivalued mappings. Dissertationes Math. (Rozprawy Mat.) 389, 26\u201327 (2000)","journal-title":"Dissertationes Math. (Rozprawy Mat.)"},{"issue":"324","key":"371_CR20","doi-asserted-by":"publisher","first-page":"555","DOI":"10.1016\/j.jmaa.2005.12.009","volume":"1","author":"C Yang","year":"2006","unstructured":"C. Yang, F. Wang, On a new geometric constant related to the von Neumann-Jordan constant. J. Math. Anal. Appl. 1(324), 555\u2013565 (2006)","journal-title":"J. Math. Anal. Appl."},{"key":"371_CR21","first-page":"212","volume":"32 A","author":"C Yang","year":"2012","unstructured":"C. Yang, Y. Wang, Some properties on Jordan\u2013von\u00a0Neumann type constant of Banach spaces. Acta Math. Sci. 32 A, 212\u2013221 (2012)","journal-title":"Acta Math. Sci."},{"key":"371_CR22","first-page":"1","volume":"2010","author":"J Zhang","year":"2010","unstructured":"J. Zhang, Y. Cui, On some geometric constants and the fixed point property for multivalued nonexpansive mappings. Fixed Point Theory Appl. 2010, 1\u201312 (2010)","journal-title":"Fixed Point Theory Appl."},{"key":"371_CR23","unstructured":"J. Zhang, Geometric constants of Banach spaces in metric fixed point theory. Dissertation Math. PhD thesis, Harbin Institute of Technology (2011)"},{"issue":"37","key":"371_CR24","first-page":"71","volume":"1","author":"Z Zuo","year":"2012","unstructured":"Z. Zuo, An application of Zb$$\\breve{a}$$ganu constant in fixed point theory. Acta Math. Vietnam. 1(37), 71\u201377 (2012)","journal-title":"Acta Math. Vietnam."},{"issue":"3","key":"371_CR25","doi-asserted-by":"publisher","first-page":"649","DOI":"10.7153\/jmi-10-52","volume":"10","author":"Z Zuo","year":"2016","unstructured":"Z. Zuo, C. Tang, X. Chen, L. Wang, Jordan-von Neumann type constant and fixed points for multivalued nonexpansive mappings. J. Math. Inequal. 10(3), 649\u2013657 (2016)","journal-title":"J. Math. Inequal."},{"issue":"59","key":"371_CR26","first-page":"145","volume":"2","author":"Z Zuo","year":"2016","unstructured":"Z. Zuo, Some estimates for the weakly convergent sequence coefficient in Banach spaces. Acta Math. Sin. 2(59), 145\u2013150 (2016)","journal-title":"Acta Math. Sin."},{"issue":"49","key":"371_CR27","first-page":"615","volume":"2","author":"Z Zuo","year":"2017","unstructured":"Z. Zuo, C. Tang, On James and Jordan von-Neumann type constants and the normal structure in Banach spaces. Topol. Methods Nonlinear Anal. 2(49), 615\u2013623 (2017)","journal-title":"Topol. Methods Nonlinear Anal."}],"container-title":["Periodica Mathematica Hungarica"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s10998-020-00371-w.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s10998-020-00371-w\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s10998-020-00371-w.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,11,24]],"date-time":"2021-11-24T12:12:23Z","timestamp":1637755943000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s10998-020-00371-w"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,11,17]]},"references-count":27,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2021,12]]}},"alternative-id":["371"],"URL":"https:\/\/doi.org\/10.1007\/s10998-020-00371-w","relation":{},"ISSN":["0031-5303","1588-2829"],"issn-type":[{"value":"0031-5303","type":"print"},{"value":"1588-2829","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,11,17]]},"assertion":[{"value":"13 October 2020","order":1,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"17 November 2020","order":2,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}}]}}