| 单词 | Heesch Number |
| 释义 | Heesch NumberThe Heesch number of a closed plane figure is the maximum number of times that figure can be completely surrounded bycopies of itself. The determination of the maximum possible (finite) Heesch number is known as Heesch's Problem. The Heesch number of a Triangle, Quadrilateral, regular Hexagon, or any other shape that canTile or Tessellate the plane, is infinity. Conversely, any shape with infiniteHeesch number must tile the plane (Eppstein). The largest known (finite) Heesch number is 3, and corresponds to a tileinvented by R. Ammann (Senechal 1995).
Eppstein, D. ``Heesch's Problem.'' http://www.ics.uci.edu/~eppstein/junkyard/heesch/. Fontaine, A. ``An Infinite Number of Plane Figures with Heesch Number Two.'' J. Comb. Th. A 57, 151-156, 1991. Senechal, M. Quasicrystals and Geometry. New York: Cambridge University Press, 1995. |
| 随便看 |
|
数学辞典收录了8975条数学词条，基本涵盖了常用数学知识及数学英语单词词组的翻译及用法，是数学学习的有利工具。