The 53rd International Mathematical Olympiad (IMO) was held this year at Mar del Plata, Argentina. The question papers can be downloaded here. The 52nd IMO was held last year at the Netherlands. The IMO problem short-list with the solutions of that IMO can be downloaded here. The...

  There is nothing remarkable about mathematicians’ achievements going unrecognised in a wider world changed by their discoveries. The hidden history of Alan Turing is just a particularly bizarre example — one we can expect to become much better known during the 2012 centenary of his...