A sphere is a perfectly round solid figure. All points on the surface of the shape are the same distance away from the centre – we call this distance the radius. The formula for the volume and ...

But most people now know that is far from the truth. You live on the surface of a giant sphere, like a beach ball the size of the Earth with a few bumps added. The surface of the sphere and the ...

A mathematical problem solved by Susanna Heikkilä relates to the classification of quasiregularly elliptic 4-manifolds, ...

They retraced the markings and the geometry of the spheroids based on ... For this transformation to occur to the object for it to be an ideal sphere, exceptional knapping skills, a technique ...