Spring 2011 Date Speaker Title January 20 Rachel Ward, Courant Institute, New York University Fast dimensionality reduction: improved bounds and implications for compressed sensing/td> January 27 Vladimir Rokhlin, Yale University A randomized approximate nearest neighbors algorithm February 3 Bjorn Poonen, MIT x2 + y3 = z7 February 10, 159 Mulford Hall Shing-Tung Yau, Harvard University String theory and the geometry of the universe's hidden dimensions (Expository lecture) February 17 John Ball, ...