Type: Article

Regular polygonal complexes in space, II

Pellicer, Daniel; Schulte, Egon;

Abstract:

Regular polygonal complexes in euclidean 3-space E-3 are discrete polyhedra-like structures with finite or infinite polygons as faces and with finite graphs as vertex-figures, such that their symmetry groups are transitive on the flags. The present paper and its predecessor describe a complete classification of regular polygonal complexes in E-3. In Part I we established basic structural results for the symmetry groups, discussed operations on their generators, characterized the complexes with face mirrors as the 2-skeletons of the regular 4-apeirotopes in E-3, and fully enumerated the simply flag-transitive complexes with mirror Vector (1,2). In this paper, we complete the enumeration of all regular polygonal complexes in E-3 and in particular describe the simply flag-transitive complexes for the remaining mirror vectors. It is found that, up to similarity, there are precisely 25 regular polygonal complexes which are not regular polyhedra, namely 21 simply flag-transitive complexes and 4 complexes which are 2-skeletons of regular 4-apeirotopes in E-3.