Abstract
Given an abstract polytope P, its flag graph is the edge-coloured graph whose vertices are the flags of P and whose i-edges correspond to i-adjacent flags. Flag graphs of polytopes are maniplexes. On the other hand, a maniplex need not be the flag graph of a polytope. It is natural to ask when does a maniplex is the flag graph of a polytope. In this paper we give necessary and sufficient conditions (in terms of graphs) on a maniplex to be (isomorphic to) the flag graph of a polytope. For this, given a maniplex M, we define a poset PM and determine when is PM an abstract polytope. Moreover, in such case, we show that M is isomorphic to the flag graph of PM.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2068-2079 |
| Number of pages | 12 |
| Journal | Discrete Mathematics |
| Volume | 341 |
| Issue number | 7 |
| DOIs | |
| State | Published - Jul 2018 |
| Externally published | Yes |
All Science Journal Classification (ASJC) codes
- Theoretical Computer Science
- Discrete Mathematics and Combinatorics
Keywords
- Abstract polytopes
- Edge-coloured graphs
- Maniplexes
- Polytopal maps