Vojčák P. On nonlocal symmetries for the Krichever-Novikov equation, talk at The Workshop on Geometry of PDEs and Integrability, 14-18 October 2013, Teplice nad Becvou, Czech Republic (abstract)

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Speaker: Petr Vojčák

Title: On nonlocal symmetries for the Krichever-Novikov equation

Abstract:
We construct new infinite hierarchies of nonlocal symmetries and cosymmetries for the Krichever-Novikov equation using the inverse of the fourth-order recursion operator of the latter.