Researchers have solved a long-standing problem in topology by helping classify four-dimensional shapes (4-manifolds) that ...

This type of diagram is created by scattering points at random on a Euclidean plane. The plane is then divided up into tessellating polygons, known as cells, one around each point, consisting of the ...

Susanna Heikkilä solved a problem in topology, or mathematics pertaining to the shape of surfaces. The fact that one of the ...