400年ぶりに新種の「対称性多面体」構造が発見される
http://gigazine.net/news/20140222-new-polyhedron-shape/
After 400 years, mathematicians find a new class of solid shapes
http://theconversation.com/after-400-years-mathematicians-find-a-new-class-of-solid-shapes-23217
http://gigazine.net/news/20140222-new-polyhedron-shape/
After 400 years, mathematicians find a new class of solid shapes
http://theconversation.com/after-400-years-mathematicians-find-a-new-class-of-solid-shapes-23217