{"title":"关于对数典范广义对的最小模型存在性的评论","authors":"Nikolaos Tsakanikas, Lingyao Xie","doi":"10.1007/s00209-024-03489-6","DOIUrl":null,"url":null,"abstract":"<p>Given an NQC log canonical generalized pair <span>\\((X,B+M)\\)</span> whose underlying variety <i>X</i> is not necessarily <span>\\(\\mathbb {Q}\\)</span>-factorial, we show that one may run a <span>\\((K_X+B+M)\\)</span>-MMP with scaling of an ample divisor which terminates, provided that <span>\\((X,B+M)\\)</span> has a minimal model in a weaker sense or that <span>\\(K_X+B+M\\)</span> is not pseudo-effective. We also prove the existence of minimal models of pseudo-effective NQC log canonical generalized pairs under various additional assumptions, for instance when the boundary contains an ample divisor.</p>","PeriodicalId":18278,"journal":{"name":"Mathematische Zeitschrift","volume":"15 1","pages":""},"PeriodicalIF":1.0000,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Remarks on the existence of minimal models of log canonical generalized pairs\",\"authors\":\"Nikolaos Tsakanikas, Lingyao Xie\",\"doi\":\"10.1007/s00209-024-03489-6\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Given an NQC log canonical generalized pair <span>\\\\((X,B+M)\\\\)</span> whose underlying variety <i>X</i> is not necessarily <span>\\\\(\\\\mathbb {Q}\\\\)</span>-factorial, we show that one may run a <span>\\\\((K_X+B+M)\\\\)</span>-MMP with scaling of an ample divisor which terminates, provided that <span>\\\\((X,B+M)\\\\)</span> has a minimal model in a weaker sense or that <span>\\\\(K_X+B+M\\\\)</span> is not pseudo-effective. We also prove the existence of minimal models of pseudo-effective NQC log canonical generalized pairs under various additional assumptions, for instance when the boundary contains an ample divisor.</p>\",\"PeriodicalId\":18278,\"journal\":{\"name\":\"Mathematische Zeitschrift\",\"volume\":\"15 1\",\"pages\":\"\"},\"PeriodicalIF\":1.0000,\"publicationDate\":\"2024-04-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Mathematische Zeitschrift\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://doi.org/10.1007/s00209-024-03489-6\",\"RegionNum\":3,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Mathematische Zeitschrift","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1007/s00209-024-03489-6","RegionNum":3,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
Remarks on the existence of minimal models of log canonical generalized pairs
Given an NQC log canonical generalized pair \((X,B+M)\) whose underlying variety X is not necessarily \(\mathbb {Q}\)-factorial, we show that one may run a \((K_X+B+M)\)-MMP with scaling of an ample divisor which terminates, provided that \((X,B+M)\) has a minimal model in a weaker sense or that \(K_X+B+M\) is not pseudo-effective. We also prove the existence of minimal models of pseudo-effective NQC log canonical generalized pairs under various additional assumptions, for instance when the boundary contains an ample divisor.