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Constellations and multicontinued fractions: Application to Eulerian triangulations

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Abstract

We consider the problem of enumerating planar constellations with two points at a prescribed distance. Our approach relies on a combinatorial correspondence between this family of constellations and the simpler family of rooted constellations, which we may formulate algebraically in terms of multicontinued fractions and generalized Hankel determinants. As an application, we provide a combinatorial derivation of the generating function of Eulerian triangulations with two points at a prescribed distance.

Original languageEnglish
Pages (from-to)805-816
Number of pages12
JournalDiscrete Mathematics and Theoretical Computer Science
Publication statusPublished - 1 Dec 2012
Event24th International Conference on Formal Power Series and Algebraic Combinatorics, FPSAC 2012 - Nagoya, Japan
Duration: 30 Jul 20123 Aug 2012

Keywords

  • Constellations
  • Continued fractions
  • Eulerian triangulations
  • Lattice paths
  • Planar maps

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