{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T01:10:23Z","timestamp":1760058623581,"version":"build-2065373602"},"reference-count":50,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2025,4,21]],"date-time":"2025-04-21T00:00:00Z","timestamp":1745193600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Natural Science Foundation of China","award":["11801322","12371173","ZR2021MA064"],"award-info":[{"award-number":["11801322","12371173","ZR2021MA064"]}]},{"DOI":"10.13039\/501100007129","name":"Shandong Natural Science Foundation","doi-asserted-by":"publisher","award":["11801322","12371173","ZR2021MA064"],"award-info":[{"award-number":["11801322","12371173","ZR2021MA064"]}],"id":[{"id":"10.13039\/501100007129","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Axioms"],"abstract":"<jats:p>In this paper, we investigate the existence results of solutions for Caputo-type fractional (p,q)-difference equations. Using Banach\u2019s fixed-point theorem, we obtain the existence and uniqueness results. Meanwhile, by applying Krasnoselskii\u2019s fixed-point theorem and Leray-Schauder\u2019s nonlinear alternative, we also obtain the existence results of non-trivial solutions. Finally, we provide examples to verify the correctness of the given results. Moreover, relevant applications are presented through specific examples.<\/jats:p>","DOI":"10.3390\/axioms14040318","type":"journal-article","created":{"date-parts":[[2025,4,21]],"date-time":"2025-04-21T20:38:26Z","timestamp":1745267906000},"page":"318","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Existence of Solutions for Caputo-Type Fractional (p,q)-Difference Equations Under Robin Boundary Conditions"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0009-0001-1052-2916","authenticated-orcid":false,"given":"Hailong","family":"Ma","sequence":"first","affiliation":[{"name":"College of Mathematics and Systems Science, Shandong University of Science and Technology, Qingdao 266590, China"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0795-9188","authenticated-orcid":false,"given":"Hongyu","family":"Li","sequence":"additional","affiliation":[{"name":"College of Mathematics and Systems Science, Shandong University of Science and Technology, Qingdao 266590, China"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,21]]},"reference":[{"key":"ref_1","unstructured":"Kisela, T. 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