Regular singular points as isomonodromic confluences of Fuchsian singular points

Abstract

Andrei Andreevich Bolibrukh's works on the analytic theory of differential equations Dmitry V Anosov and Vladimir P Leksin Riemann-Hilbert problem for scalar Fuchsian equations and related problems Il'ya V Vyugin On deformations of linear differential systems Renat R Gontsov, Vladimir A Poberezhnyi and Gerard F Helminck Isomonodromic deformations of systems of linear differential equations with irregular singularities Yulia P Bibilo The Riemann-Hilbert problem A A Bolibrukh Spectral properties of left triangular matrices M L Blank On solvability and unsolvability of equations in explicit form A G Khovanskii Regular singular points as isomonodromic confluences of Fuchsian singular points