Suris, Yuri B.Vermeeren, Mats2017-09-012017-09-012016978-3-662-50447-5https://depositonce.tu-berlin.de/handle/11303/6688http://dx.doi.org/10.14279/depositonce-6129We develop the concept of pluri-Lagrangian structures for integrable hierarchies. This is a continuous counterpart of the pluri-Lagrangian (or Lagrangian multiform) theory of integrable lattice systems. We derive the multi-time Euler Lagrange equations in their full generality for hierarchies of two-dimensional systems, and construct a pluri-Lagrangian formulation of the potential Korteweg-de Vries hierarchy.en510 MathematikBook Part