occasional meanderings in physics' brave new world
- Name: Kea
- Location: New Zealand
Marni D. Sheppeard
Wednesday, March 12, 2008
It is quite a while since we looked at Batanin's picture of the three dimensional permutoassociahedron, so here it is! Observe how it resolves each vertex of a permutohedron (labelled by an ordering of four letters) into a pentagon (which represents the Mac Lane bracketings of four letters). This is a 120 vertex polytope.