Don’t see a lot of Swiss army knives for code. Very neat in that regard.

DARPA is soliciting innovative research proposals in the area of DARPA Mathematical Challenges, with the goal of dramatically revolutionizing mathematics and thereby strengthening the scientific and technological capabilities of DoD. To do so, the agency has identified twenty-three mathematical challenges, listed below, which were announced at DARPA Tech 2007.

The difference can be subtle

A very nice hack for getting at the physics of the climate using some nice linear algebra techniques is presented. My first time seeing an ill-conditioned problem in the wild.