38 citations · 112 across the 21 of their papers we have counts for
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math.MG2007★ 1 cited
Zonotopes With Large 2D Cuts
Thilo Rörig, Nikolaus Witte, Günter M. Ziegler
There are d-dimensional zonotopes with n zones for which a 2-dimensional central section has Ω(n^{d-1}) vertices. For d=3 this was known, with examples provided by the "Ukrainian e…
math.MG2007★ 2 cited
A Small Polyhedral Z-Acyclic 2-Complex in R4
Frank H. Lutz, Günter M. Ziegler
We present a small 4-dimensional polyhedral realization of a 2-dimensional Z-acyclic but non-contractible simplicial complex.