아이코시안 (icosian)

개요

• 계수를 $\mathbb{Z}[\sqrt{5}]$에서 갖는 사원수들이 이루는 환
• E8 격자에 isometric

메모

• http://mathoverflow.net/questions/117604/a-non-commutative-ring-from-su2
• http://www.tony5m17h.net/E8H4H4.pdf

관련된 항목들

• 해밀턴의 사원수(quarternions)

사전 형태의 자료

• http://en.wikipedia.org/wiki/Icosian

리뷰, 에세이, 강의노트

• Biggs, Norman. “The Icosian Calculus of Today.” Proceedings of the Royal Irish Academy. Section A. Mathematical and Physical Sciences 95, no. suppl. (1995): 23–34.

관련논문

• Moody, R. V., and J. Patera. “Quasicrystals and Icosians.” Journal of Physics. A. Mathematical and General 26, no. 12 (1993): 2829–53.
• Wilson, Robert A. "The geometry of the Hall-Janko group as a quaternionic reflection group." Geometriae Dedicata 20.2 (1986): 157-173.