A bijection for rooted maps on general surfaces
Chapuy, Guillaume ; Dołęga, Maciej
HAL, hal-01185318 / Harvested from HAL
We extend the Marcus-Schaeffer bijection between orientable rooted bipartite quadrangulations (equivalently: rooted maps) and orientable labeled one-face maps to the case of all surfaces, that is orientable and non-orientable as well. This general construction requires new ideas and is more delicate than the special orientable case, but it carries the same information. In particular, it leads to a uniform combinatorial interpretation of the counting exponent $\frac{5(h-1)}{2}$ for both orientable and non-orientable rooted connected maps of Euler characteristic $2-2h$, and of the algebraicity of their generating functions, similar to the one previously obtained in the orientable case via the Marcus-Schaeffer bijection. It also shows that the renormalization factor $n^{1/4}$ for distances between vertices is universal for maps on all surfaces: the renormalized profile and radius in a uniform random pointed bipartite quadrangulation on any fixed surface converge in distribution when the size $n$ tends to infinity. Finally, we extend the Miermont and Ambj\"orn-Budd bijections to the general setting of all surfaces. Our construction opens the way to the study of Brownian surfaces for any compact 2-dimensional manifold.
Publié le : 2015-08-19
Classification:  [MATH.MATH-CO]Mathematics [math]/Combinatorics [math.CO]
@article{hal-01185318,
     author = {Chapuy, Guillaume and Do\l \k ega, Maciej},
     title = {A bijection for rooted maps on general surfaces},
     journal = {HAL},
     volume = {2015},
     number = {0},
     year = {2015},
     language = {en},
     url = {http://dml.mathdoc.fr/item/hal-01185318}
}
Chapuy, Guillaume; Dołęga, Maciej. A bijection for rooted maps on general surfaces. HAL, Tome 2015 (2015) no. 0, . http://gdmltest.u-ga.fr/item/hal-01185318/