Domino Shuffling on Novak Half-Hexagons and Aztec Half-Diamonds

We explore the connections between the well-studied Aztec Diamond graphs and a new family of graphs called the Half-Hexagons, discovered by Jonathan Novak. In particular, both families of graphs have very simple domino shuffling algorithms, which turn out to be intimately related. This connection al...

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Bibliographic Details
Published in:The Electronic Journal of Combinatorics
Main Authors: Nordenstam, Eric, Young, Benjamin
Format: Article in Journal/Newspaper
Language:English
Published: The Electronic Journal of Combinatorics 2011
Subjects:
Online Access:https://www.combinatorics.org/ojs/index.php/eljc/article/view/v18i1p181
https://doi.org/10.37236/668
Description
Summary:We explore the connections between the well-studied Aztec Diamond graphs and a new family of graphs called the Half-Hexagons, discovered by Jonathan Novak. In particular, both families of graphs have very simple domino shuffling algorithms, which turn out to be intimately related. This connection allows us to prove an "arctic parabola" theorem for the Half-Hexagons as a corollary of the Arctic Circle theorem for the Aztec Diamond.