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On regular polyhedra with hidden symmetries
Authors:Jörg M. Wills
Affiliation:1. Math. Inst. Univ. Siegen, Hoelderlinstr. 3, D-5900, Siegen, Fed. Rep. Germany
Abstract:We consider polyhedral realizations of oriented regular maps with or without self-intersections in E3 whose symmetry group is a subsgroup of small index in their. automorphism group. The four classical kepler-poinsot polyhedra are the only ones of index 1. There are exactly five of Index 2, all with icosahedral symmetry group [W2] as the Kepler-poinsot polyhedra. In this paper we show that there are no such polyhedral realizations with octahedral (tetrahedral) symmetry group and index 2 or 3 (2,3,4,5), which is best possible in the octahedral case.
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