Essential spectrum of systems of singular differential equations

Ibrogimov, Orif and Langer, Heinz and Langer, Matthias and Tretter, Christiane (2013) Essential spectrum of systems of singular differential equations. Acta Scientiarum Mathematicarum, 79 (3-4). pp. 423-465. ISSN 0001-6969

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Abstract

In this paper we develop a new method to determine the essential spectrum of coupled systems of singular differential equations. Applications to problems from magnetohydrodynamics and astrophysics are given.