Counting unrooted planar maps


Rooted planar maps of various types, including all rooted planar maps, were counted by Tutte [4]. The problem of enumerating a set of unrooted planar maps ~3s the subject of [7]. In such an enumeration, two maps MI and I&, which are regarcicd as lying on a 2-sphere, are identified whenever there is a homeomorphism of the 2-sphere onto itself which maps MI… (More)
DOI: 10.1016/0012-365X(81)90238-7


4 Figures and Tables

Cite this paper

@article{Wormald1981CountingUP, title={Counting unrooted planar maps}, author={Nicholas C. Wormald}, journal={Discrete Mathematics}, year={1981}, volume={36}, pages={205-225} }