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Zipper Unfoldings of Polyhedral Complexes

Author(s)
Demaine, Erik D.; Demaine, Martin L.; Lubiw, Anna; Shallit, Arlo; Shallit, Jonah L.
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Creative Commons Attribution-Noncommercial-Share Alike 3.0 http://creativecommons.org/licenses/by-nc-sa/3.0/
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Abstract
We explore which polyhedra and polyhedral complexes can be formed by folding up a planar polygonal region and fastening it with one zipper. We call the reverse process a zipper unfolding. A zipper unfolding of a polyhedron is a path cut that unfolds the polyhedron to a planar polygon; in the case of edge cuts, these are Hamiltonian unfoldings as introduced by Shephard in 1975. We show that all Platonic and Archimedean solids have Hamiltonian unfoldings. We give examples of polyhedral complexes that are, and are not, zipper [edge] unfoldable. The positive examples include a polyhedral torus, and two tetrahedra joined at an edge or at a face.
Date issued
2010-08
URI
http://hdl.handle.net/1721.1/62237
Department
Massachusetts Institute of Technology. Computer Science and Artificial Intelligence Laboratory; Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Journal
Proceedings of the 22nd Canadian Conference on Computational Geometry, 2010, (CCCG 2010)
Publisher
University of Manitoba
Citation
Demaine, Erik D. et al. "Zipper Unfoldings of Polyhedral Complexes." 22nd Canadian Conference on Computational Geometry, CCCG 2010, Winnipeg MB, August 9-11, 2010.
Version: Author's final manuscript

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