Type: Seminar

Distribution: World

Expiry: 24 Apr 2013

Auth: sarahl@p630x.pc (assumed)

Dr Chris Ormerod from La Trobe University will give a talk on Wednesday 24th April at 3pm in Carslaw room 829 (AGR): Title: Twisted reductions of partial difference equations Abstract: We consider reductions of lattice equations satisfying a self-similarity constraint, which generalizes the idea of a periodic reduction. As examples of this theory, we will present new reductions of the discrete potential Korteweg-de Vries equation, discrete modified Korteweg-de Vries equation and the discrete Schwarzian Korteweg-de Vries equation. We will describe a direct method for obtaining Lax representations for the given reductions which gives rise to a novel group representation of the Lie point symmetries of the equations. (joint work with Jarmo Hietarinta, Peter van der Kamp and Reinout Quispel)