caa a22 4500 445884266 CHVBK 20180317145554.0 cr unu---uuuuu 170323e20110401xx s 000 0 eng 10.1007/s10711-010-9524-5 doi (NATIONALLICENCE)springer-10.1007/s10711-010-9524-5 Polyhedral surfaces in wedge products [Elektronische Daten] [Thilo Rörig, Günter Ziegler] We introduce the wedge product of two polytopes. The wedge product is described in terms of inequality systems, in terms of vertex coordinates as well as purely combinatorially, from the corresponding data of its constituents. The wedge product construction can be described as an iterated "subdirect product” as introduced by McMullen (Discrete Math 14:347-358, 1976); it is dual to the "wreath product” construction of Joswig and Lutz (J Combinatorial Theor A 110:193-216, 2005). One particular instance of the wedge product construction turns out to be especially interesting: The wedge products of polygons with simplices contain certain combinatorially regular polyhedral surfaces as subcomplexes. These generalize known classes of surfaces "of unusually large genus” that first appeared in works by Coxeter (Proc London Math Soc 43:33-62, 1937), Ringel (Abh Math Seminar Univ Hamburg 20:10-19, 1956), and McMullen etal. (Israel J Math 46:127-144, 1983). Via "projections of deformed wedge products” we obtain realizations of some of the surfaces in the boundary complexes of 4-polytopes, and thus in $${{\mathbb R}^3}$$ . As additional benefits our construction also yields polyhedral subdivisions for the interior and the exterior, as well as a great number of local deformations ("moduli”) for the surfaces in $${{\mathbb R}^3}$$ . In order to prove that there are many moduli, we introduce the concept of "affine support sets” in simple polytopes. Finally, we explain how duality theory for 4-dimensional polytopes can be exploited in order to also realize combinatorially dual surfaces in $${{\mathbb R}^3}$$ via dual 4-polytopes. Springer Science+Business Media B.V., 2010 Convex polytopes nationallicence Polyhedral surfaces nationallicence Wreath products of polytopes nationallicence Combinatorially regular polyhedral surfaces nationallicence Surfaces of "unusually high genus” nationallicence Moduli nationallicence Rörig Thilo Inst. Mathematics MA 8-3, TU Berlin, 10623, Berlin, Germany aut Ziegler Günter Inst. Mathematics MA 6-2, TU Berlin, 10623, Berlin, Germany aut Geometriae Dedicata Springer Netherlands 151/1(2011-04-01), 155-173 0046-5755 151:1<155 2011 151 10711 https://doi.org/10.1007/s10711-010-9524-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10711-010-9524-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Rörig Thilo Inst. Mathematics MA 8-3, TU Berlin, 10623, Berlin, Germany aut NATIONALLICENCE 700 1- Ziegler Günter Inst. Mathematics MA 6-2, TU Berlin, 10623, Berlin, Germany aut NATIONALLICENCE 773 0- Geometriae Dedicata Springer Netherlands 151/1(2011-04-01), 155-173 0046-5755 151:1<155 2011 151 10711 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer