Add Yahoo as a preferred source to see more of our stories on Google. Computer generated image of concentric rings around a central shaded hat (dark blue). Look carefully! Mathematicians have invented ...

And it all began with a hobbyist “messing about and experimenting with shapes.” An “aperiodic monotile,” or einstein, is a shape that tiles an infinite flat surface in a nonrepeating pattern. The ...

Earlier this spring, tiling aficionados thought maybe they’d found the shape of their dreams. Now they’re certain. By Siobhan Roberts In March, a team of mathematical tilers announced their solution ...