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arXiv · 1601.00558

Signed tilings by ribbon L n-ominoes, n odd, via Groebner bases

Viorel Nitica
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Abstract

We show that a rectangle can be signed tiled by ribbon L n-ominoes, n odd, if and only if it has a side divisible by n. A consequence of our technique, based on the exhibition of an explicit Groebner basis, is that any k-inflated copy of the skewed L n-omino has a signed tiling by skewed L n-ominoes. We also discuss regular tilings by ribbon L n-ominoes, n odd, for rectangles and more general regions. We show that in this case obstructions appear that are not detected by signed tilings.

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Viorel Nitica. 2016-03-06. Signed tilings by ribbon L n-ominoes, n odd, via Groebner bases. https://arxiv.org/abs/1601.00558

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