%0 Journal Article %T An integral equation for Root's barrier and the generation of Brownian increments %A Paul Gassiat %A Aleksandar Mijatovi£¿ %A Harald Oberhauser %J Mathematics %D 2013 %I arXiv %R 10.1214/14-AAP1042 %X We derive a nonlinear integral equation to calculate Root's solution of the Skorokhod embedding problem for atom-free target measures. We then use this to efficiently generate bounded time-space increments of Brownian motion and give a parabolic version of Muller's classic "Random walk over spheres" algorithm. %U http://arxiv.org/abs/1309.5877v2