{"title":"Ring Homomorphisms","authors":"J. Gallian","doi":"10.1142/9789814271905_0014","DOIUrl":null,"url":null,"abstract":"• If R and S are ring, a function f : R → S is a ring homomorphism (or a ring map) if f (x + y) = f (x) + f (y) and f (xy) = f (x)f (y) for all x, y ∈ R. If R and S are rings with identity, it's customary to also require that f (1) = 1.","PeriodicalId":213836,"journal":{"name":"Contemporary Abstract Algebra","volume":"295 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2021-01-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"1","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Contemporary Abstract Algebra","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1142/9789814271905_0014","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 1
Abstract
• If R and S are ring, a function f : R → S is a ring homomorphism (or a ring map) if f (x + y) = f (x) + f (y) and f (xy) = f (x)f (y) for all x, y ∈ R. If R and S are rings with identity, it's customary to also require that f (1) = 1.