It’s been just months since researchers reported the first “einstein” — a single tile that can cover an infinite plane, but only with a pattern that never repeats (SN: 3/24/23). Now, the same team has found a shape that’s even more special.
The original einstein, nicknamed “the hat,” made a pattern that involved both the hat and its mirror image. The new tile also makes a pattern that never repeats, but without such reflections,
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