Not all simplicial polytopes are weakly vertex-decomposable
- Author(s): De Loera, Jesus A.
- Klee, Steven
- et al.
Published Web Locationhttps://arxiv.org/pdf/1203.1676.pdf
In 1980 Provan and Billera defined the notion of weak $k$-decomposability for pure simplicial complexes. They showed the diameter of a weakly $k$-decomposable simplicial complex $\Delta$ is bounded above by a polynomial function of the number of $k$-faces in $\Delta$ and its dimension. For weakly 0-decomposable complexes, this bound is linear in the number of vertices and the dimension. In this paper we exhibit the first examples of non-weakly 0-decomposable simplicial polytopes.