短正合列的性质
摘要:PureMathematics理论数学,2020,10(8),719-725PublishedOnlineAugust2020inHans.http://www.hanspub.org/journal/pmhttps://doi.org/10.12677/pm.2020.108085TheNatureofShortExactSequenceHongtaoFanCollegeofMathematicsandInformationScience,NanchangHangkongUniverisity,NanchangJiangxistththReceived:Jul.21,2020;accepted:Aug.7,2020;published:Aug.14,2020AbstractInthispaper,theshortexactsequencecomposedofchaincomplexandchainmappingisstudied.Theedgehomomorphismofhomologysequenceisdefinedandtheproofofgooddefinitionisgiven.Byusingtheshortexactsequencecomposedofchaincomplexandchainmapandthedefinededgehomomorphism,thenaturalnessofthepositivecongruentsequenceandthehomologysequenceisderivedandproved.KeywordsS
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