The Yablonskii - Vorob'ev polynomials for the second Painlev'e hierarchy

Details The Yablonskii - Vorob'ev polynomials for the second Painlev'e hierarchy The Yablonskii - Vorob'ev polynomials for the second Painlev'e hierarchy

2006-05-06

arxiv.org/abs/nlin/0605018v1

Nonlinear Sciences

Exactly Solvable and Integrable Systems

23 pages, 2 figures

Scientific paper

Special polynomials associated with rational solutions of the second Painlev'e equation and other equations of its hierarchy are studied. A new method, which allows one to construct each family of polynomials is presented. The structure of the polynomials is established. Formulaes for their coefficients are found. The degree of every polynomial is obtained. The main achievement of the method lies in the fact that it enables one to construct the family of polynomials corresponding to any member of the second Painlev'e hierarchy. Our approach can be applied for deriving the polynomials related to rational or algebraic solutions of other nonlinear differential equations.

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