This award is made as part of the FY 2013 Mathematical Sciences Postdoctoral Research Fellowships Program. Each of the fellowships supports a research and training project at a host institution in the mathematical sciences, including applications to other disciplines, under the mentorship of a sponsoring scientist. The title of the project for this fellowship to Daniel Hernandez is "Singularities in Positive Characteristic via the Frobenius Endomorphism." The host institution for the fellowship is the University of Utah, and the sponsoring scientist is Dr. Anurag Singh.