푸앵카레 정십이면체 공간(dodecahedral space)

메모

• http://www.rudyrucker.com/blog/2008/04/20/is-the-universe-infinite/
• http://blog.daum.net/brainet/37
• http://www.staff.science.uu.nl/~henri105/Teaching/TopologieEnMeetkunde2012.pdf
• http://mathoverflow.net/questions/86166/explicit-tetrahedralizations-of-closed-3-manifolds-and-connections-between-convex