Visualizing Lucas’s Hamiltonian Paths Through the Associahedron 1-Skeleton (Media Exposition)

Authors Kacey Thien-Huu La, Jose E. Arbelo, Christopher J. Tralie



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Author Details

Kacey Thien-Huu La
  • Ursinus College Mathematics And Computer Science, Collegeville, PA, USA
Jose E. Arbelo
  • Ursinus College Mathematics And Computer Science, Collegeville, PA, USA
Christopher J. Tralie
  • Ursinus College Mathematics And Computer Science, Collegeville, PA, USA

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Kacey Thien-Huu La, Jose E. Arbelo, and Christopher J. Tralie. Visualizing Lucas’s Hamiltonian Paths Through the Associahedron 1-Skeleton (Media Exposition). In 40th International Symposium on Computational Geometry (SoCG 2024). Leibniz International Proceedings in Informatics (LIPIcs), Volume 293, pp. 90:1-90:6, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2024)
https://doi.org/10.4230/LIPIcs.SoCG.2024.90

Abstract

We re-examine the 1987 paper by Joan Lucas[Lucas, 1987], who showed that the edge-flip graph of convex polygon triangulations is Hamiltonian. We focus specifically on the first part of her paper on Hamiltonian paths, and we provide a simplified algorithm for that case which elucidates how to assemble a recursive subdivision that she refers to as "stacks." Finally, we provide an interactive web-based visualization of Hamiltonian paths through the stacks.

Subject Classification

ACM Subject Classification
  • Human-centered computing → Visualization toolkits
  • Theory of computation → Randomness, geometry and discrete structures
Keywords
  • associahedron
  • hamiltonian paths
  • visualization
  • tree rotations
  • convex polygons

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References

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