Rational Solutions of the Schlesinger System and Isoprincipal Deformations of Rational Matrix Functions I
Abstract
In the present paper we discuss the general facts, concerning the Schlesinger system: the (τ)-function, the local factorization of solutions of Fuchsian equations and holomorphic deformations. We introduce the terminology "isoprincipal" for the deformations of Fuchsian equations with general (not necessarily non-resonant) matrix coefficients, corresponding to solutions of the Schlesinger system.
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