Regular polygonal complexes in space, I
Regular polygonal complexes in space, I
A polygonal complex in Euclidean $3$-space $\mathbb {E}^3$ is a discrete poly- hedron-like structure with finite or infinite polygons as faces and finite graphs as vertex-figures, such that a fixed number $r\geqslant 2$ of faces surround each edge. It is said to be regular if its symmetry group is transitive …