Submitted by Mark Esposito, Guest Blogger

Grigory (“Grisha”)Perelman is an unusual man — in very many respects. Living in near poverty with his mother in St. Petersburg, the forty-three year old Russian mathematician had a strange interest in an arcane problem known as the Poincare’ Conjecture. Proposed in 1904 by French mathematician, Henri Poincare’, the theorem contends that three-spheres are the only possible bounded three-dimensional spaces to contain no holes.















iPhones and Android smartphones regularly transmit their locations back to Apple and Google. The location information is used for the estimated $2.9 billion location-based services market. Location-based advertising targets consumers with location-specific advertising on their mobile devices.