{"title":"微分模块的 Boij-Söderberg 猜想","authors":"Maya Banks","doi":"10.1016/j.jalgebra.2024.08.025","DOIUrl":null,"url":null,"abstract":"<div><p>Boij-Söderberg theory gives a combinatorial description of the set of Betti tables belonging to finite length modules over the polynomial ring <span><math><mi>S</mi><mo>=</mo><mi>k</mi><mo>[</mo><msub><mrow><mi>x</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>,</mo><mo>…</mo><mo>,</mo><msub><mrow><mi>x</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>]</mo></math></span>. We posit that a similar combinatorial description can be given for analogous numerical invariants of <em>graded differential S-modules</em>, which are natural generalizations of chain complexes. We prove several results that lend evidence in support of this conjecture, including a categorical pairing between the derived categories of graded differential <em>S</em>-modules and coherent sheaves on <span><math><msup><mrow><mi>P</mi></mrow><mrow><mi>n</mi><mo>−</mo><mn>1</mn></mrow></msup></math></span> and a proof of the conjecture in the case where <span><math><mi>S</mi><mo>=</mo><mi>k</mi><mo>[</mo><mi>t</mi><mo>]</mo></math></span>.</p></div>","PeriodicalId":14888,"journal":{"name":"Journal of Algebra","volume":null,"pages":null},"PeriodicalIF":0.8000,"publicationDate":"2024-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S0021869324004836/pdfft?md5=9ddb8d758d9e4041c890ffa8ca30c4c1&pid=1-s2.0-S0021869324004836-main.pdf","citationCount":"0","resultStr":"{\"title\":\"Boij-Söderberg conjectures for differential modules\",\"authors\":\"Maya Banks\",\"doi\":\"10.1016/j.jalgebra.2024.08.025\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Boij-Söderberg theory gives a combinatorial description of the set of Betti tables belonging to finite length modules over the polynomial ring <span><math><mi>S</mi><mo>=</mo><mi>k</mi><mo>[</mo><msub><mrow><mi>x</mi></mrow><mrow><mn>1</mn></mrow></msub><mo>,</mo><mo>…</mo><mo>,</mo><msub><mrow><mi>x</mi></mrow><mrow><mi>n</mi></mrow></msub><mo>]</mo></math></span>. We posit that a similar combinatorial description can be given for analogous numerical invariants of <em>graded differential S-modules</em>, which are natural generalizations of chain complexes. We prove several results that lend evidence in support of this conjecture, including a categorical pairing between the derived categories of graded differential <em>S</em>-modules and coherent sheaves on <span><math><msup><mrow><mi>P</mi></mrow><mrow><mi>n</mi><mo>−</mo><mn>1</mn></mrow></msup></math></span> and a proof of the conjecture in the case where <span><math><mi>S</mi><mo>=</mo><mi>k</mi><mo>[</mo><mi>t</mi><mo>]</mo></math></span>.</p></div>\",\"PeriodicalId\":14888,\"journal\":{\"name\":\"Journal of Algebra\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.8000,\"publicationDate\":\"2024-09-02\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.sciencedirect.com/science/article/pii/S0021869324004836/pdfft?md5=9ddb8d758d9e4041c890ffa8ca30c4c1&pid=1-s2.0-S0021869324004836-main.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Algebra\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0021869324004836\",\"RegionNum\":2,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Algebra","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021869324004836","RegionNum":2,"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
摘要
Boij-Söderberg 理论给出了属于多项式环 S=k[x1,...,xn]上有限长度模块的贝蒂表集合的组合描述。我们认为,对于分级微分 S 模块的类似数值不变式,也可以给出类似的组合描述。我们证明了支持这一猜想的几个结果,包括梯度微分 S 模块派生类与 Pn-1 上相干剪切之间的分类配对,以及 S=k[t] 情况下的猜想证明。
Boij-Söderberg conjectures for differential modules
Boij-Söderberg theory gives a combinatorial description of the set of Betti tables belonging to finite length modules over the polynomial ring . We posit that a similar combinatorial description can be given for analogous numerical invariants of graded differential S-modules, which are natural generalizations of chain complexes. We prove several results that lend evidence in support of this conjecture, including a categorical pairing between the derived categories of graded differential S-modules and coherent sheaves on and a proof of the conjecture in the case where .
期刊介绍:
The Journal of Algebra is a leading international journal and publishes papers that demonstrate high quality research results in algebra and related computational aspects. Only the very best and most interesting papers are to be considered for publication in the journal. With this in mind, it is important that the contribution offer a substantial result that will have a lasting effect upon the field. The journal also seeks work that presents innovative techniques that offer promising results for future research.