Topological Drawings of Complete Bipartite Graphs

Cardinal, Jean and Felsner, Stefan (2016) Topological Drawings of Complete Bipartite Graphs. In: Graph Drawing and Network Visualization. GD 2016, September, 19. - 21., 2016 , pp. 441-453(Official URL:

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Topological drawings are natural representations of graphs in the plane, where vertices are represented by points, and edges by curves connecting the points. We consider a natural class of simple topological drawings of complete bipartite graphs, in which we require that one side of the vertex set bipartition lies on the outer boundary of the drawing. We investigate the combinatorics of such drawings. For this purpose, we define combinatorial encodings of the drawings by enumerating the distinct drawings of subgraphs isomorphic to K2,2 and K3,2, and investigate the constraints they must satisfy. We prove in particular that for complete bipartite graphs of the form K2,n and K3,n, such an encoding corresponds to a drawing if and only if it obeys consistency conditions on triples and quadruples. In the general case of Kk,n with k≥2, we completely characterize and enumerate drawings in which the order of the edges around each vertex is the same for vertices on the same side of the bipartition.

Item Type: Conference Paper
Classifications: P Styles > P.300 Curved
Z Theory > Z.750 Topology

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