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mobius strip

Article

Introducing the Klein bottle

A Klein bottle can't hold any liquid because it doesn't have an inside. How do you construct this strange thing and why would you want to?
Article

3D printing mathematics

Saul Schleimer and Henry Segerman show off some of their beautiful 3D printed mathematical structures.
News story

Still life

Mathematics illustrates the forefront of visualising science
Article

In space, do all roads lead to home?

Is the Universe finite, with an edge, or infinite, with no edges? Or is it even stranger: finite but with no edges? It sounds far-fetched but the mathematical theory of topology makes it possible, and nobody yet knows the truth. Janna Levin tells us more.