{"title":"Mixed motives and linear forms in the Catalan constant","authors":"Payman Eskandari, V. Kumar Murty, Yusuke Nemoto","doi":"10.1112/jlms.70708","DOIUrl":null,"url":null,"abstract":"<p>We first give a geometric construction of a two-dimensional mixed motive over <span></span><math>\n <semantics>\n <mi>Q</mi>\n <annotation>${\\mathbb {Q}}$</annotation>\n </semantics></math> with the Catalan constant <span></span><math>\n <semantics>\n <mrow>\n <mi>G</mi>\n <mo>=</mo>\n <mn>1</mn>\n <mo>−</mo>\n <mn>1</mn>\n <mo>/</mo>\n <msup>\n <mn>3</mn>\n <mn>2</mn>\n </msup>\n <mo>+</mo>\n <mn>1</mn>\n <mo>/</mo>\n <msup>\n <mn>5</mn>\n <mn>2</mn>\n </msup>\n <mo>−</mo>\n <mn>1</mn>\n <mo>/</mo>\n <msup>\n <mn>7</mn>\n <mn>2</mn>\n </msup>\n <mo>+</mo>\n <mi>⋯</mi>\n </mrow>\n <annotation>${\\mathbf {G}}=1-1/3^2+1/5^2-1/7^2+\\cdots$</annotation>\n </semantics></math> as a period. We then use this motive to obtain a supply of linear forms in 1 and <span></span><math>\n <semantics>\n <mi>G</mi>\n <annotation>${\\mathbf {G}}$</annotation>\n </semantics></math>. We also explicitly compute the coefficients of 1 and <span></span><math>\n <semantics>\n <mi>G</mi>\n <annotation>${\\mathbf {G}}$</annotation>\n </semantics></math> in these linear forms.</p>","PeriodicalId":49989,"journal":{"name":"Journal of the London Mathematical Society-Second Series","volume":"114 4","pages":""},"PeriodicalIF":1.4000,"publicationDate":"2026-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1112/jlms.70708","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the London Mathematical Society-Second Series","FirstCategoryId":"100","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1112/jlms.70708","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
We first give a geometric construction of a two-dimensional mixed motive over with the Catalan constant as a period. We then use this motive to obtain a supply of linear forms in 1 and . We also explicitly compute the coefficients of 1 and in these linear forms.
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.