Inserted: 30 nov 2011
Last Updated: 30 oct 2017
Journal: Comm. Partial Differential Equations
In this paper we use the new regularity and stability estimates for Alexandrov solutions to Monge-Ampere equations estabilished by G.De Philippis and A.Figalli to provide a global in time existence of distributional solutions to a semigeostrophic equation on the 2-dimensional torus, under very mild assumptions on the initial data. A link with Lagrangian solutions is also discussed.
Keywords: optimal transportation, Lagrangian flow, Semigeostrophic equations