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On classes of planar maps with $\alpha$-orientations having geometric interpretations

Presented by: 
G Schaeffer École Polytechnique
Wednesday 22nd April 2015 - 10:00 to 11:00
INI Seminar Room 1
Fixed out-degree orientations or $\alpha$-orientations play a central rôle in the so-called master bijections relating various families of planar maps to simple varieties of trees. I will discuss several known cases in which these orientations also provide purely combinatorial ways to compute geometric representations.
University of Cambridge Research Councils UK
    Clay Mathematics Institute London Mathematical Society NM Rothschild and Sons