Special solutions of the first and second Painlevé equations and singularities of the monodromy data manifold

V. Yu. Novokshenov

Trudy Instituta matematiki i mehaniki, Trudy Instituta Matematiki i Mekhaniki UrO RAN, Tome 18 (2012) no. 2, pp. 179-190

Résumé

A classification of solutions of the first and second Painlevé equations corresponding to a special distribution of poles at infinity is considered. The relation between this distribution and singularities of the two-dimensional complex monodromy data manifold used for the parameterization of the solutions is analyzed. It turns out that solutions of the Painlevé equations have no poles in a certain critical sector of the complex plane if and only if their monodromy data lie in the singularity submanifold. Such solutions belong to the so-called class of “truncated” solutions (intégrales tronquée) according to P. Boutroux's classification. It is shown that all known special solutions of the first and second Painlevé equations belong to this class.

Détail

Mots-clés : Painlevé equations, isomonodromic deformations, distribution of poles, Padé approximations.
Keywords: special solutions

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