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arXiv · 1311.1877

The first, second and fourth Painlevé equations on weighted projective spaces

Hayato Chiba
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Abstract

The first, second and fourth Painlevé equations are studied by means of dynamical systems theory and three dimensional weighted projective spaces $\C P^3(p,q,r,s)$ with suitable weights $(p,q,r,s)$ determined by the Newton diagrams of the equations or the versal deformations of vector fields. Singular normal forms of the equations, a simple proof of the Painlevé property and symplectic atlases of the spaces of initial conditions are given with the aid of the orbifold structure of $\C P^3(p,q,r,s)$. In particular, for the first Painlevé equation, a well known Painlevé's transformation is geometrically derived, which proves to be the Darboux coordinates of a certain algebraic surface with a holomorphic symplectic form. The affine Weyl group, Dynkin diagram and the Boutroux coordinates are also studied from a view point of the weighted projective space.

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Hayato Chiba. 2014-07-05. The first, second and fourth Painlevé equations on weighted projective spaces. https://arxiv.org/abs/1311.1877

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