Do All Integrable Evolution Equations Have the Painlevé Property?

Details Do All Integrable Evolution Equations Have the Painlevé Property? Do All Integrable Evolution Equations Have the Painlevé Property?

2007-06-19

arxiv.org/abs/0706.2719v1

SIGMA 3 (2007), 073, 6 pages

Nonlinear Sciences

Exactly Solvable and Integrable Systems

Published in SIGMA (Symmetry, Integrability and Geometry: Methods and Applications) at http://www.emis.de/journals/SIGMA/

Scientific paper

10.3842/SIGMA.2007.073

We examine whether the Painleve property is necessary for the integrability of partial differential equations (PDEs). We show that in analogy to what happens in the case of ordinary differential equations (ODEs) there exists a class of PDEs, integrable through linearisation, which do not possess the Painleve property. The same question is addressed in a discrete setting where we show that there exist linearisable lattice equations which do not possess the singularity confinement property (again in analogy to the one-dimensional case).

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