Obituary: Maryam Mirzakhani died on July 14thObituary: Maryam Mirzakhani died on July 14thThe world’s leading female mathematician was 40 IMAGINE a frictionless ball rolling around a billiard table. Next, work out, on variously shaped tables, which set of ricochets would merely repeat a pattern, and which would eventually cover the whole surface. Full answers are still elusive, but it is the sort of mathematical puzzle that outsiders can at
