Analytic methods for obstruction to integrability in discrete dynamical systems

Details Analytic methods for obstruction to integrability in discrete dynamical systems Analytic methods for obstruction to integrability in discrete dynamical systems

2006-08-13

arxiv.org/abs/math/0608308v1

Comm. Pure Appl. Math. 58 (2005), no. 6, 723--749

Mathematics

Dynamical Systems

Scientific paper

A unique analytic continuation result is proved for solutions of a relatively general class of difference equations, using techniques of generalized Borel summability. This continuation allows for Painlev\'e property methods to be extended to difference equations. It is shown that the Painlev\'e property (PP) induces, under relatively general assumptions, a dichotomy within first order difference equations: all equations with PP can be solved in closed form; on the contrary, absence of PP implies, under some further assumptions, that the local conserved quantities are strictly local in the sense that they develop singularity barriers on the boundary of some compact set. The technique produces analytic formulas to describe fractal sets originating in polynomial iterations.

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