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nlin.SI2007
Global classification of two-component approximately integrable evolution equations
Peter H. van der Kamp
We globally classify two-component evolution equations, with homogeneous diagonal linear part, admitting infinitely many approximate symmetries. Important ingredients are the symbo…
nlin.SI2002
On testing integrability
Peter H. van der Kamp, Jan A. Sanders
We demonstrate, using the symbolic method together with p-adic and resultant methods,the existence of systems with exactly one or two generalized symmetries. Since the existence of…