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Reversible aperiodic hat tiles — image 1
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Reversible aperiodic hat tiles

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Smith, Myers, Kaplan, and Goodman-Strauss's aperiodic monotile, the Hat, with Piker's Truchet-like markings on one side

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Model information

Category
Math
License
Creative Commons — Public Domain

Smith, Myers, Kaplan, and Goodman-Strauss's aperiodic monotile, the Hat, smooth on one side and with Dan Piker's Truchet-like markings on the other side in relief.

As discovered in March 2023, this single shape tiles the plane but only non-periodically.

Some of the tiles in a tiling must be mirror images of the others. On average there is about 1 mirror image tile for each 7 non mirror image tiles. So print a few mirrored. In the photos the red tiles are the mirrored ones.

For information on this tile see https://aperiodical.com/2023/03/an-aperiodic-monotile-exists/ .

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