MathematicsThe most important mathematician you’ve (probably) never heard of Alexander Grothendieck was a titan in his field, making deep connections that fuelled a revolution in mathematics, before giving it all up and disappearing. Jacob Aron explores what his work meant Comment
MathematicsMathematicians create a tetrahedron that always lands on the same side With the help of powerful computers, researchers discovered a four-sided shape that naturally rests on one side, and built a real-life version from carbon fibre and tungsten 51¶¯Âþ