Electronic Journal of Differential Equations, Vol. 2011 (2011), No. 113, pp. 1-22. Title: Nonlinear quarter-plane problem for the Korteweg-de Vries equation Authors: Nikolai A. Larkin (Univ. Estadual de Maringa, Brazil) Eduardo Tronco (Univ. Estadual de Maringa, Brazil) Abstract: This article concerns an initial-boundary value problem in a quarter-plane for the Korteweg-de Vries (KdV) equation. For general nonlinear boundary conditions we prove the existence and uniqueness of a global regular solution. Submitted June 18, 2011. Published August 30, 2011. Math Subject Classifications: 35Q53. Key Words: KdV equation; global solution; semi-discretization.