Mathematicians discover 13-sided “Einstein Shape” – aperiodic monotile that can tile an infinite plane and never repeat the same pattern
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(CNN) – A geometry problem that has been puzzling scientists for 60 years has likely just been solved by an amateur mathematician with a newly discovered 13-sided shape. Called “The hat” because it vaguely resembles a fedora, the elusive shape is an “einstein” (from the German “ein stein,” or “one stone”). That means it can completely cover a surface without