, a famous mathematician who works in the field of topology has a preprint
that provides a proof of the Poincaré conjecture
. This was one of the seven Clay Mathematics Institute millenium prize problems
(reported on Slashdot here
). The solution to each of the problems carries a monetary reward of 1 million dollars. However there are a number of conditions that still need to be met for the prize to be awarded in the case of the Poincaré conjecture.