Abstract
The pole field solver developed recently by the authors (J. Comput. Phys. 230:5957–5973, 2011) is used to survey the space of solutions of the second Painlevé equation that are real on the real axis. This includes well-known solutions such as the Hastings–McLeod and Ablowitz–Segur type of solutions, as well as some novel solutions. The speed and robustness of this pole field solver enable the exploration of pole dynamics in the complex plane as the parameter and initial conditions of the differential equation are varied. Theoretical connection formulas are also verified numerically.
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Acknowledgements
Financial support for this work was provided by NSF grant DMS-0914647 (first author) and the National Research Foundation in South Africa (second author), as well as the National Institute for Theoretical Physics (NITheP) in South Africa. Communications with Andrew Bassom, Peter Clarkson, Percy Deift, Alexander Its, Andrei Kapaev, Jonah Reeger and Harvey Segur are also acknowledged. The workshop “Numerical solution of the Painlevé Equations”, held in May 2010 at the International Center for the Mathematical Sciences (ICMS), in Edinburgh, stimulated [14] and the present study.
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Communicated by Elizabeth Mansfield.
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Fornberg, B., Weideman, J.A.C. A Computational Exploration of the Second Painlevé Equation. Found Comput Math 14, 985–1016 (2014). https://doi.org/10.1007/s10208-013-9156-x
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DOI: https://doi.org/10.1007/s10208-013-9156-x