The John theorem for simplex
- ISSN号:1000-8314
- 期刊名称:《数学年刊:A辑》
- 时间:0
- 分类:O174.64[理学—数学;理学—基础数学]
- 作者机构:[1]Department of Mathematics, College of Sciences , Shanghai University, Shanghai 200454, P. R . China, [2]College of Science, Beijing Forestry University, Beijing 100083, P.R. China
- 相关基金:Project supported by National Natural Science Foundation of China (Grant No. 10271071 ), and Youth Science Foundation of Shanghai (Grant No.214511),Acknowledgment for this paper He Binwu for his valuable suggestions
中文摘要:
在这份报纸,对约翰接触的描述指一常规单一被给。它是证明任何东西的约翰椭圆体单一如果并且仅当,是球这单一是常规的并且约翰椭圆体一常规单一是它的刻写的球。关键词单一 - 约翰定理 - 约翰椭圆体 - 2000 数学题目分类 52A40 工程由中国(资助号码 10271071 ) 的国家自然科学基础支持了的 barycentric 坐标,和上海(资助 No.214511 ) 的青春科学基础
英文摘要:
In this paper, a description of the John contact points of a regular simplex was given. It was prove that the John ellipsoid of any simplex is ball ff and only ff this simplex is regular and that the John ellipsoid of a regular simplex is its inscribed ball.