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  1. Home > Articles & Issues >
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  3. New bijective links ...
Conference paper

New bijective links on planar maps

Eric Fusy (1)
(1) Department of Mathematics [Burnaby]
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Imported on
May 10, 2017
Published on
December 31, 2007
Last modified on
March 31, 2025
Volume
DMTCS Proceedings vol. AJ, 20th Annual International Conference on Formal Power Series and Algebraic Combinatorics (FPSAC 2008)
Proceedings
DOI
10.46298/dmtcs.3628
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https://about.hal.science/hal-authorisation-v1
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New bijective links on planar maps

Eric Fusy (1)
(1) Department of Mathematics [Burnaby]
Abstract
English
This article describes new bijective links on planar maps, which are of incremental complexity and present original features. The first two bijections $\Phi _{1,2}$ are correspondences on oriented planar maps. They can be considered as variations on the classical edge-poset construction for bipolar orientations on graphs, suitably adapted so as to operate only on the embeddings in a simple local way. In turn, $\Phi_{1,2}$ yield two new bijections $F_{1,2}$ between families of (rooted) maps. (i) By identifying maps with specific constrained orientations, $\Phi_2 \circ \Phi_1$ specialises to a bijection $F_1$ between 2-connected maps and irreducible triangulations; (ii) $F_1$ gives rise to a bijection $F_2$ between loopless maps and triangulations, observing that these decompose respectively into 2-connected maps and into irreducible triangulations in a parallel way.
French
Cet article décrit de nouveaux liens bijectifs sur les cartes planaires. Nos constructions sont de complexité croissante et présentent des caractéristiques originales. Les deux premières bijections $\Phi _{1,2}$ portent sur des cartes orientées. Elle peuvent être vues comme des variations sur une construction classique de posets sans $N$ à partir d'orientations bipolaires, adaptées ici pour opérer de manière très simple sur le plongement. Les bijections $\Phi _{1,2}$ entrainent à leur tour deux nouvelles bijections $F_{1,2}$ entre familles de cartes (enracinées). (i) En identifiant les cartes avec certaines orientations contraintes, $\Phi_2 \circ \Phi_1$ se spécialise en une bijection $F_1$ entre cartes 2-connexes et triangulations irréductibles, (ii) $F_1$ induit une bijection $F_2$ entre cartes sans boucles et triangulations, qui se décomposent respectivement en cartes 2-connexes et en triangulations irréductibles de manière parallèle.
Keywords
  • [MATH.MATH-CO]Mathematics [math]/Combinatorics [math.CO]
  • [INFO.INFO-DM]Computer Science [cs]/Discrete Mathematics [cs.DM]
  • Planar maps
  • bijections
  • orientations
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