Irrationality of the Roots of the Yablonskii-Vorob'ev Polynomials and Relations between Them

Autor: Pieter Roffelsen
Jazyk: angličtina
Rok vydání: 2010
Předmět:
Zdroj: Symmetry, Integrability and Geometry: Methods and Applications, Vol 6, p 095 (2010)
Druh dokumentu: article
ISSN: 1815-0659
DOI: 10.3842/SIGMA.2010.095
Popis: We study the Yablonskii-Vorob'ev polynomials, which are special polynomials used to represent rational solutions of the second Painlevé equation. Divisibility properties of the coefficients of these polynomials, concerning powers of 4, are obtained and we prove that the nonzero roots of the Yablonskii-Vorob'ev polynomials are irrational. Furthermore, relations between the roots of these polynomials for consecutive degree are found by considering power series expansions of rational solutions of the second Painlevé equation.
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