Each summer, the Mathematical Sciences Research Institute, an independent nonprofit based in Berkeley California, invites 18 talented mathematics undergraduates to the UC Berkeley campus for the summer to provide them with a high-quality research experience in the mathematical sciences.  The program recruits talented undergraduate students from gender and racial/ethnic populations historically underrepresented in the mathematical sciences and focuses on equipping them with the training and the support network to enter and succeed in graduate study.  The program receives high marks from student participants, and program alumni apply and are admitted to graduate programs at a rate much higher than the national average.  Grant funds provide core operating support to the program for a period of four years.