The $9$ faces of the associahedron provide endless entertainment. We would like to glue three octagons together to form the polytope, but recall that two vertices of the associahedron are special: those at the centre of three pentagons. We can glue two octagons together, but then we find a polygon boundary with a different number of edges.
14 years ago
No comments:
Post a Comment
Note: Only a member of this blog may post a comment.