{"title":"八面体平移覆盖密度下限","authors":"Yiming Li, Yanlu Lian, Miao Fu, Yuqin Zhang","doi":"10.1515/advgeom-2024-0006","DOIUrl":null,"url":null,"abstract":"Based on Zong’s work [26] on translative packing densities of 3-dimensional convex bodies, we present a local method to estimate the density <jats:italic>θ<jats:sup>t</jats:sup> </jats:italic>(<jats:italic>C</jats:italic> <jats:sub>3</jats:sub>) of the densest translative covering of an octahedron. As a consequence we prove that <jats:italic>θ<jats:sup>t</jats:sup> </jats:italic>(<jats:italic>C</jats:italic> <jats:sub>3</jats:sub>) ≥ 1 + 6.6 × 10<jats:sup>–8</jats:sup>, which is the first non-trivial lower bound for this density.","PeriodicalId":7335,"journal":{"name":"Advances in Geometry","volume":"286 1","pages":""},"PeriodicalIF":0.5000,"publicationDate":"2024-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Lower bound on the translative covering density of octahedra\",\"authors\":\"Yiming Li, Yanlu Lian, Miao Fu, Yuqin Zhang\",\"doi\":\"10.1515/advgeom-2024-0006\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Based on Zong’s work [26] on translative packing densities of 3-dimensional convex bodies, we present a local method to estimate the density <jats:italic>θ<jats:sup>t</jats:sup> </jats:italic>(<jats:italic>C</jats:italic> <jats:sub>3</jats:sub>) of the densest translative covering of an octahedron. As a consequence we prove that <jats:italic>θ<jats:sup>t</jats:sup> </jats:italic>(<jats:italic>C</jats:italic> <jats:sub>3</jats:sub>) ≥ 1 + 6.6 × 10<jats:sup>–8</jats:sup>, which is the first non-trivial lower bound for this density.\",\"PeriodicalId\":7335,\"journal\":{\"name\":\"Advances in Geometry\",\"volume\":\"286 1\",\"pages\":\"\"},\"PeriodicalIF\":0.5000,\"publicationDate\":\"2024-08-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advances in Geometry\",\"FirstCategoryId\":\"100\",\"ListUrlMain\":\"https://doi.org/10.1515/advgeom-2024-0006\",\"RegionNum\":4,\"RegionCategory\":\"数学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATHEMATICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advances in Geometry","FirstCategoryId":"100","ListUrlMain":"https://doi.org/10.1515/advgeom-2024-0006","RegionNum":4,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATHEMATICS","Score":null,"Total":0}
Lower bound on the translative covering density of octahedra
Based on Zong’s work [26] on translative packing densities of 3-dimensional convex bodies, we present a local method to estimate the density θt(C3) of the densest translative covering of an octahedron. As a consequence we prove that θt(C3) ≥ 1 + 6.6 × 10–8, which is the first non-trivial lower bound for this density.
期刊介绍:
Advances in Geometry is a mathematical journal for the publication of original research articles of excellent quality in the area of geometry. Geometry is a field of long standing-tradition and eminent importance. The study of space and spatial patterns is a major mathematical activity; geometric ideas and geometric language permeate all of mathematics.