{"title":"Gravity properad and moduli spaces \n \n \n M\n \n g\n ,\n n\n \n \n ${\\mathcal {M}}_{g,n}$","authors":"Sergei A. Merkulov","doi":"10.1112/jlms.70313","DOIUrl":null,"url":null,"abstract":"<p>Let <span></span><math>\n <semantics>\n <msub>\n <mi>M</mi>\n <mrow>\n <mi>g</mi>\n <mo>,</mo>\n <mi>m</mi>\n <mo>+</mo>\n <mi>n</mi>\n </mrow>\n </msub>\n <annotation>${\\mathcal {M}}_{g,m+n}$</annotation>\n </semantics></math> be the moduli space of algebraic curves of genus <span></span><math>\n <semantics>\n <mi>g</mi>\n <annotation>$g$</annotation>\n </semantics></math> with <span></span><math>\n <semantics>\n <mrow>\n <mi>m</mi>\n <mo>⩾</mo>\n <mn>1</mn>\n </mrow>\n <annotation>$m\\geqslant 1$</annotation>\n </semantics></math> boundaries and <span></span><math>\n <semantics>\n <mrow>\n <mi>n</mi>\n <mo>⩾</mo>\n <mn>0</mn>\n </mrow>\n <annotation>$n\\geqslant 0$</annotation>\n </semantics></math> marked points, and <span></span><math>\n <semantics>\n <mrow>\n <msubsup>\n <mi>H</mi>\n <mi>c</mi>\n <mo>•</mo>\n </msubsup>\n <mrow>\n <mo>(</mo>\n <msub>\n <mi>M</mi>\n <mrow>\n <mi>m</mi>\n <mo>+</mo>\n <mi>n</mi>\n </mrow>\n </msub>\n <mo>)</mo>\n </mrow>\n </mrow>\n <annotation>$H_c^{\\bullet }({\\mathcal {M}}_{m+n})$</annotation>\n </semantics></math> its compactly supported cohomology group. We prove that the collection of <span></span><math>\n <semantics>\n <mrow>\n <msubsup>\n <mi>S</mi>\n <mi>m</mi>\n <mrow>\n <mi>o</mi>\n <mi>p</mi>\n </mrow>\n </msubsup>\n <mo>×</mo>\n <msub>\n <mi>S</mi>\n <mi>n</mi>\n </msub>\n </mrow>\n <annotation>${\\mathbb {S}}_m^{op}\\times {\\mathbb {S}}_n$</annotation>\n </semantics></math>-modules\n\n </p>","PeriodicalId":49989,"journal":{"name":"Journal of the London Mathematical Society-Second Series","volume":"112 4","pages":""},"PeriodicalIF":1.2000,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the London Mathematical Society-Second Series","FirstCategoryId":"100","ListUrlMain":"https://londmathsoc.onlinelibrary.wiley.com/doi/10.1112/jlms.70313","RegionNum":2,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS","Score":null,"Total":0}
引用次数: 0
Abstract
Let be the moduli space of algebraic curves of genus with boundaries and marked points, and its compactly supported cohomology group. We prove that the collection of -modules
设mg,M + n ${\mathcal {M}}_{g,m+n}$是g格$g$的代数曲线的模空间,具有M大于或等于$m\geqslant 1$的边界和n大于或等于或等于0 $n\geqslant 0$标记点;H c•(M M + n) $H_c^{\bullet }({\mathcal {M}}_{m+n})$结构紧凑上同调群。证明了S mo p × S n ${\mathbb {S}}_m^{op}\times {\mathbb {S}}_n$ -模的集合
期刊介绍:
The Journal of the London Mathematical Society has been publishing leading research in a broad range of mathematical subject areas since 1926. The Journal welcomes papers on subjects of general interest that represent a significant advance in mathematical knowledge, as well as submissions that are deemed to stimulate new interest and research activity.