Abstract
The fourth-order analogue of the second Painlevé equation is considered. The monodromy manifold for a Lax pair associated with the P 22 equation is constructed. The direct monodromy problem for the Lax pair is solved. Asymptotic solutions expressed via trigonometric functions in the Boutroux variables along the rays ϕ = \(\frac{2}{5}\)π(2n + 1) on the complex plane have been found by the isomonodromy deformations technique.
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Gaiur, I.Y., Kudryashov, N.A. Weak nonlinear asymptotic solutions for the fourth order analogue of the second Painlevé equation. Regul. Chaot. Dyn. 22, 266–271 (2017). https://doi.org/10.1134/S1560354717030066
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DOI: https://doi.org/10.1134/S1560354717030066