Polyiamond (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Polyiamond" in English language version.

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1books.google.com

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1mathpuzzle.com

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books.google.com

Alsina, Claudi; Nelsen, Roger B. (31 December 2015). A Mathematical Space Odyssey: Solid Geometry in the 21st Century. American Mathematical Soc. ISBN 9781614442165.

doi.org

David, Guy; Tomei, Carlos (1989). "The Problem of the Calissons". The American Mathematical Monthly. 96 (5): 429–431. doi:10.1080/00029890.1989.11972212. JSTOR 2325150.

jstor.org

David, Guy; Tomei, Carlos (1989). "The Problem of the Calissons". The American Mathematical Monthly. 96 (5): 429–431. doi:10.1080/00029890.1989.11972212. JSTOR 2325150.

mathpuzzle.com

"All of the polyiamonds of order eight or less, with the exception of one of the heptiamonds will tessellate the plane. The exception is the V-shaped heptiamond. Gardner (6th book p.248) posed the problem of identifying this heptiamond and reproduced an impossibilty proof of Gregory. However, in combination with other heptiamonds or other polyiamonds, tesselations using this V-shaped heptiamond can be achieved."

oeis.org

Sloane, N.J.A. (July 9, 2021). "A000577". OEIS. The OEIS Foundation Inc. Retrieved July 9, 2021. triangular polyominoes (or triangular polyforms, or polyiamonds)