A plane tiling consisting of congruent copies of a shape is isohedral provided that for any pair of copies, there exists a symmetry of the tiling mapping one copy to the other. We give a O(n*log^2(n))-time algorithm for deciding if a polyomino with n edges can tile the plane isohedrally. This improves on the O(n^{18})-time algorithm of Keating and Vince and generalizes recent work by Brlek, Provençal, Fédou, and the second author.
@InProceedings{langerman_et_al:LIPIcs.SoCG.2016.50, author = {Langerman, Stefan and Winslow, Andrew}, title = {{A Quasilinear-Time Algorithm for Tiling the Plane Isohedrally with a Polyomino}}, booktitle = {32nd International Symposium on Computational Geometry (SoCG 2016)}, pages = {50:1--50:15}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-009-5}, ISSN = {1868-8969}, year = {2016}, volume = {51}, editor = {Fekete, S\'{a}ndor and Lubiw, Anna}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.SoCG.2016.50}, URN = {urn:nbn:de:0030-drops-59423}, doi = {10.4230/LIPIcs.SoCG.2016.50}, annote = {Keywords: Plane tiling, polyomino, boundary word, isohedral} }
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