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Zbl 1152.34395
Joshi, Nalini; Kitaev, A. V.
On Boutroux's {\it tritronquée} solutions of the first Painlevé equation. (English)
[J] Stud. Appl. Math. 107, No. 3, 253-291 (2001). ISSN 0022-2526; ISSN 1467-9590/e

Summary: The triply truncated solutions of the first Painlevé equation were specified by {\it P. Boutroux} in his famous paper of 1913 [Ann. Sci. Éc. Norm. Sup. (3) 30, 255--375 (1913; JFM 44.0382.02)] as those having no poles (of large modulus) except in one sector of angle $2\pi/5$. There are five such solutions and each of them can be obtained from any other one by applying a certain symmetry transformation. One of these solutions is real on the real axis. We found a characteristic property of this solution, different from the asymptotic description given by Boutroux. This allows us to estimate numerically the position of its real pole and zero closest to the origin. We also study properties of asymptotic series for truncated solutions.

MSC 2000:: *34M55 Painlevé and other special equations
34M30 Asymptotics, summation methods

Keywords: triply truncated solutions

Citations: JFM 44.0382.02

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