Mathematics – Classical Analysis and ODEs
Scientific paper
2010-05-15
A V Kitaev and A Vartanian 2010 Inverse Problems 26 105010
Mathematics
Classical Analysis and ODEs
50 pages
Scientific paper
10.1088/0266-5611/26/10/105010
The degenerate third Painleve' equation, $u"(t)=(u'(t))^2/u(t)-u'(t)/t+1/t(-8c u^2(t)+2ab)+b^2/u(t)$, where $c=+/-1$, $b>0$, and $a$ is a complex parameter, is studied via the Isomonodromy Deformation Method. Asymptotics of general regular and singular solutions $u(t)$ as $t -> +/-\infty$ and $t -> +/-i\infty$ are derived and parametrized in terms of the monodromy data of the associated 2X2 linear auxiliary problem introduced in the first part of this work [1]. Using these results, three-real-parameter families of solutions that have infinite sequences of zeroes and poles that are asymptotically located along the real and imaginary axes are distinguished: asymptotics of these zeroes and poles are also obtained.
Kitaev Alexander V.
Vartanian A.
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