Planar Maps as Labeled Mobiles

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Planar Maps as Labeled Mobiles
We extend Schaeffer's bijection between rooted quadrangulations and welllabeled trees to the general case of Eulerian planar maps with prescribed face valences to obtain a bijection with a new class of labeled trees, which we call mobiles. Our bijection covers all the classes of maps previously enumerated by either the two-matrix model used by physicists or by the bijection with blossom trees used by combinatorists. Our bijection reduces the enumeration of maps to that, much simpler, of mobiles and moreover keeps track of the geodesic distance within the initial maps via the mobiles' labels. Generating functions for mobiles are shown to obey systems of algebraic recursion relations.
J. Bouttier, P. Di Francesco, E. Guitter
Added 17 Dec 2010
Updated 17 Dec 2010
Type Journal
Year 2004
Authors J. Bouttier, P. Di Francesco, E. Guitter
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