Essential spectrum of systems of singular differential equations

Orif Ibrogimov, Heinz Langer, Matthias Langer, Christiane Tretter

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)423-465
Number of pages43
JournalActa Scientiarum Mathematicarum
Issue number3-4
Publication statusPublished - Nov 2013


  • essential spectrum
  • block operator matrix
  • singular coefficients


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