Document Type
Article
Rights
This item is available under a Creative Commons License for non-commercial use only
Disciplines
Pure mathematics
Abstract
For each finite real reflection group $W$, we identify a copy of the type-$W$ simplicial generalised associahedron inside the corresponding simplicial permutahedron. This defines a bijection between the facets of the generalised associahedron and the elements of the type-$W$ non-crossing partition lattice which is more tractable than previous such bijections. We show that the simplicial fan determined by this associahedron coincides with the Cambrian fan for $W$.
DOI
https://doi.org/10.1017/S0013091508000448
Recommended Citation
Watt, C. & Brady, T. (2008). From Permutahedron to Associahedron. Proceedings of the Edinburgh Mathematical Society, series 2, vol. 53, pp 299-310. doi:10.1017/S0013091508000448
Publication Details
Proceedings of the Edinburgh Mathematical Society, series 2, vol. 53, pp 299-310