Realization spaces of 4-polytopes are universal

Jürgen Richter-Gebert, Günter M. Ziegler

Let $P\subset {\mathbb{R}}^d$ be a $d$-dimensional polytope. The {\em realization space} of~$P$ is the space of all polytopes $P^{\prime }\subset {\mathbb{R}}^d$ that are combinatorially equivalent to~$P$, modul…