This article is cited in 7 papers

Isomonodromy deformations of equations with irregular singularities

M. V. Fedoryuk


Abstract: Necessary and sufficient conditions are obtained for a deformation to be isomonodromic for higher-order systems and equations in a neighborhood of an irregular singular point in the case when all formal solutions are subnormal series. Examples are considered.

UDC: 517.925,71

MSC: Primary 34A25, 34A20; Secondary 34E20, 76B25, 81T08

Received: 12.04.1989

 English version: Mathematics of the USSR-Sbornik, 1992, 71:2, 463–479

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