Medieval Islamic designers used elaborate geometrical tiling patterns at least 500 years before Western mathematicians developed the concept. The geometric design, called “girih”, was widely used to ...

Remember the graph paper you used at school, the kind that’s covered with tiny squares? It’s the perfect illustration of what mathematicians call a “periodic tiling of space”, with shapes covering an ...

Remember the graph paper you used at school, the kind that's covered with tiny squares? It's the perfect illustration of what mathematicians call a 'periodic tiling of space', with shapes covering an ...