{"title":"单项式曲线的强健简并复合体","authors":"Dimitra Kosta, Apostolos Thoma, Marius Vladoiu","doi":"10.1007/s10801-024-01349-4","DOIUrl":null,"url":null,"abstract":"<p>To every simple toric ideal <span>\\(I_T\\)</span> one can associate the strongly robust simplicial complex <span>\\(\\Delta _T\\)</span>, which determines the strongly robust property for all ideals that have <span>\\(I_T\\)</span> as their bouquet ideal. We show that for the simple toric ideals of monomial curves in <span>\\(\\mathbb {A}^{s}\\)</span>, the strongly robust simplicial complex <span>\\(\\Delta _T\\)</span> is either <span>\\(\\{\\emptyset \\}\\)</span> or contains exactly one 0-dimensional face. In the case of monomial curves in <span>\\(\\mathbb {A}^{3}\\)</span>, the strongly robust simplicial complex <span>\\(\\Delta _T\\)</span> contains one 0-dimensional face if and only if the toric ideal <span>\\(I_T\\)</span> is a complete intersection ideal with exactly two Betti degrees. Finally, we provide a construction to produce infinitely many strongly robust ideals with bouquet ideal the ideal of a monomial curve and show that they are all produced this way.</p>","PeriodicalId":0,"journal":{"name":"","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-07-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"The strongly robust simplicial complex of monomial curves\",\"authors\":\"Dimitra Kosta, Apostolos Thoma, Marius Vladoiu\",\"doi\":\"10.1007/s10801-024-01349-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>To every simple toric ideal <span>\\\\(I_T\\\\)</span> one can associate the strongly robust simplicial complex <span>\\\\(\\\\Delta _T\\\\)</span>, which determines the strongly robust property for all ideals that have <span>\\\\(I_T\\\\)</span> as their bouquet ideal. We show that for the simple toric ideals of monomial curves in <span>\\\\(\\\\mathbb {A}^{s}\\\\)</span>, the strongly robust simplicial complex <span>\\\\(\\\\Delta _T\\\\)</span> is either <span>\\\\(\\\\{\\\\emptyset \\\\}\\\\)</span> or contains exactly one 0-dimensional face. In the case of monomial curves in <span>\\\\(\\\\mathbb {A}^{3}\\\\)</span>, the strongly robust simplicial complex <span>\\\\(\\\\Delta _T\\\\)</span> contains one 0-dimensional face if and only if the toric ideal <span>\\\\(I_T\\\\)</span> is a complete intersection ideal with exactly two Betti degrees. Finally, we provide a construction to produce infinitely many strongly robust ideals with bouquet ideal the ideal of a monomial curve and show that they are all produced this way.</p>\",\"PeriodicalId\":0,\"journal\":{\"name\":\"\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0,\"publicationDate\":\"2024-07-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://doi.org/10.1007/s10801-024-01349-4\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1007/s10801-024-01349-4","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
The strongly robust simplicial complex of monomial curves
To every simple toric ideal \(I_T\) one can associate the strongly robust simplicial complex \(\Delta _T\), which determines the strongly robust property for all ideals that have \(I_T\) as their bouquet ideal. We show that for the simple toric ideals of monomial curves in \(\mathbb {A}^{s}\), the strongly robust simplicial complex \(\Delta _T\) is either \(\{\emptyset \}\) or contains exactly one 0-dimensional face. In the case of monomial curves in \(\mathbb {A}^{3}\), the strongly robust simplicial complex \(\Delta _T\) contains one 0-dimensional face if and only if the toric ideal \(I_T\) is a complete intersection ideal with exactly two Betti degrees. Finally, we provide a construction to produce infinitely many strongly robust ideals with bouquet ideal the ideal of a monomial curve and show that they are all produced this way.