{"title":"三角形无穷族","authors":"Alex Loué","doi":"arxiv-2408.15763","DOIUrl":null,"url":null,"abstract":"A triangle presentation is a combinatorial datum that encodes the action of a\ngroup on a $2$-dimensional triangle complex with prescribed links, which is\nsimply transitive on the vertices. We provide the first infinite family of\ntriangle presentations that give rise to lattices in exotic buildings of type\n$\\widetilde{\\text{A}_2}$ of arbitrarily large order. Our method also gives rise\nto infinite families of triangle presentations for other link types, such as\nopposition complexes in Desarguesian projective planes.","PeriodicalId":501037,"journal":{"name":"arXiv - MATH - Group Theory","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2024-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Infinite families of triangle presentations\",\"authors\":\"Alex Loué\",\"doi\":\"arxiv-2408.15763\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"A triangle presentation is a combinatorial datum that encodes the action of a\\ngroup on a $2$-dimensional triangle complex with prescribed links, which is\\nsimply transitive on the vertices. We provide the first infinite family of\\ntriangle presentations that give rise to lattices in exotic buildings of type\\n$\\\\widetilde{\\\\text{A}_2}$ of arbitrarily large order. Our method also gives rise\\nto infinite families of triangle presentations for other link types, such as\\nopposition complexes in Desarguesian projective planes.\",\"PeriodicalId\":501037,\"journal\":{\"name\":\"arXiv - MATH - Group Theory\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2024-08-28\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv - MATH - Group Theory\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/arxiv-2408.15763\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv - MATH - Group Theory","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/arxiv-2408.15763","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
A triangle presentation is a combinatorial datum that encodes the action of a
group on a $2$-dimensional triangle complex with prescribed links, which is
simply transitive on the vertices. We provide the first infinite family of
triangle presentations that give rise to lattices in exotic buildings of type
$\widetilde{\text{A}_2}$ of arbitrarily large order. Our method also gives rise
to infinite families of triangle presentations for other link types, such as
opposition complexes in Desarguesian projective planes.