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On the connection problem for Painlevé I

Abstract : We study the dependence of the tau function of Painlev\'e I equation on the generalized monodromy of the associated linear problem. In particular, we compute connection constants relating the tau function asymptotics on five canonical rays at infinity. The result is expressed in terms of dilogarithms of cluster type coordinates on the space of Stokes data.
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Submitted on : Monday, July 3, 2017 - 6:40:52 PM
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O Lisovyy, J Roussillon. On the connection problem for Painlevé I. J.Phys.A, 2017, 50 (25), pp.255202. ⟨10.1088/1751-8121/aa6e12⟩. ⟨hal-01555199⟩



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