Looping of the numbers game and the alcoved hypercube

Details Looping of the numbers game and the alcoved hypercube Looping of the numbers game and the alcoved hypercube

2009-09-29

arxiv.org/abs/0909.5324v1

Mathematics

Representation Theory

Scientific paper

We study in detail the so-called looping case of Mozes's game of numbers, which concerns the (finite) orbits in the reflection representation of affine Weyl groups situated on the boundary of the Tits cone. We give a simple proof that all configurations in the orbit are obtainable from each other by playing the numbers game, and give a strategy for going from one configuration to another. The strategy gives rise to a partition of the finite Weyl group into finitely many graded posets, one for each extending vertex of the associated extended Dynkin diagram. These are selfdual and mutually isomorphic, and dual to the triangulation of the unit hypercube by reflecting hyperplanes, studied by many authors. Unlike the weak and Bruhat orders, the top degree is cubic in the number of vertices of the graph. We explicitly compute the Hilbert polynomial of the poset.

Affiliated with

Also associated with

No associations

Rating

Looping of the numbers game and the alcoved hypercube does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Looping of the numbers game and the alcoved hypercube, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Looping of the numbers game and the alcoved hypercube will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-664800