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Metallic numbers: Beyond the golden ratio

You've heard of the golden ratio but have you heard of the silver ratio? And all its other cousins called the metallic numbers? Read this article to meet the family!
Article

Seeing Pythagoras

The great thing about geometry is that you can sometimes prove things using pictures. Enjoy these three great visual proofs of Pythagoras' theorem!

Article

Seeing proof

Having trouble with algebra? Then try these visual proofs of two well-known algebraic identities.
Podcast

Packing spheres

We talk to Maryna Viazovska, who in 2016 made a breakthrough in the theory of sphere packings.