English

Several examples of neigbourly polyhedra in co-dimension 4

Combinatorics 2015-10-12 v1 Metric Geometry

Abstract

In the article, a series of neigbourly polyhedra is constructed. They have N=2d+4N=2d+4 vertices and are embedded in R2d\mathbb R^{2d}. Their (affine) Gale diagrams in R2\mathbb R^2 have d+3d+3 black points that form a convex polygon. These Gale diagams can be enumerated using 3-trees (trees with some additional structure). Given dd and mm, each of the constructed polyhedra in R2d\mathbb R^{2d} has a fixed number of faces of dimension mm that contain a vertex AA. (This number depends on dd and mm does not depend on the polyhedron and the vertex AA).

Keywords

Cite

@article{arxiv.0902.1435,
  title  = {Several examples of neigbourly polyhedra in co-dimension 4},
  author = {Rostislav Devyatov},
  journal= {arXiv preprint arXiv:0902.1435},
  year   = {2015}
}

Comments

In russian, 25 pages, 16 figures

R2 v1 2026-06-21T12:09:19.689Z