{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,1]],"date-time":"2025-10-01T16:25:33Z","timestamp":1759335933118,"version":"3.41.2"},"reference-count":45,"publisher":"Wiley","issue":"1","license":[{"start":{"date-parts":[[2021,2,11]],"date-time":"2021-02-11T00:00:00Z","timestamp":1613001600000},"content-version":"vor","delay-in-days":41,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004480","name":"Natural Science Foundation of Shanxi Province","doi-asserted-by":"publisher","award":["201901D111020"],"award-info":[{"award-number":["201901D111020"]}],"id":[{"id":"10.13039\/501100004480","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Complexity"],"published-print":{"date-parts":[[2021,1]]},"abstract":"<jats:p>This paper is to investigate the existence and uniqueness of solutions for an integral boundary value problem of new fractional differential equations with a sign\u2010changed parameter in Banach spaces. The main used approach is a recent fixed point theorem of increasing \u03a8 \u2212 (<jats:italic>h<\/jats:italic>, <jats:italic>r<\/jats:italic>)\u2010concave operators defined on ordered sets. In addition, we can present a monotone iterative scheme to approximate the unique solution. In the end, two simple examples are given to illustrate our main results.<\/jats:p>","DOI":"10.1155\/2021\/9567931","type":"journal-article","created":{"date-parts":[[2021,2,11]],"date-time":"2021-02-11T22:28:25Z","timestamp":1613082505000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["An Integral Boundary Value Problem of Fractional Differential Equations with a Sign\u2010Changed Parameter in Banach 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