Some Results in Sums and Products

Dissertation Defense
Thursday, November 13, 2014 - 10:00am for 1 hour (actually 50 minutes)
Skiles 114
Chris Pryby – School of Mathematics, Georgia Tech
Christopher Pryby
We demonstrate new results in additive combinatorics, including a proof of the following conjecture by J. Solymosi: for every epsilon > 0, there exists delta > 0 such that, given n^2 points in a grid formation in R^2, if L is a set of lines in general position such that each line intersects at least n^{1-delta} points of the grid, then |L| < n^epsilon. This result implies a conjecture of Gy. Elekes regarding a uniform statistical version of Freiman's theorem for linear functions with small image sets.