{"title":"Quadratic functions fulfilling an additional condition along the hyperbola \\(\\pmb {xy = 1} \\)","authors":"Zoltán Boros, Edit Garda-Mátyás","doi":"10.1007/s00010-023-01018-0","DOIUrl":null,"url":null,"abstract":"<div><p>In this paper we give necessary conditions for quadratic functions <span>\\( f :\\mathbb {R}\\rightarrow \\mathbb {R}\\)</span> that satisfy the additional equation <span>\\( y^2 f(x) = x^2 f(y) \\)</span> under the condition <span>\\( xy = 1 \\,\\)</span>.\n</p></div>","PeriodicalId":55611,"journal":{"name":"Aequationes Mathematicae","volume":null,"pages":null},"PeriodicalIF":0.9000,"publicationDate":"2023-11-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00010-023-01018-0.pdf","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Aequationes Mathematicae","FirstCategoryId":"100","ListUrlMain":"https://link.springer.com/article/10.1007/s00010-023-01018-0","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
In this paper we give necessary conditions for quadratic functions \( f :\mathbb {R}\rightarrow \mathbb {R}\) that satisfy the additional equation \( y^2 f(x) = x^2 f(y) \) under the condition \( xy = 1 \,\).
期刊介绍:
aequationes mathematicae is an international journal of pure and applied mathematics, which emphasizes functional equations, dynamical systems, iteration theory, combinatorics, and geometry. The journal publishes research papers, reports of meetings, and bibliographies. High quality survey articles are an especially welcome feature. In addition, summaries of recent developments and research in the field are published rapidly.