SwePub
Sök i SwePub databas

  Utökad sökning

Träfflista för sökning "swepub ;pers:(Kurasov Pavel);pers:(Naboko Serguei)"

Sökning: swepub > Kurasov Pavel > Naboko Serguei

  • Resultat 1-2 av 2
Sortera/gruppera träfflistan
   
NumreringReferensOmslagsbildHitta
1.
  • Kurasov, Pavel, et al. (författare)
  • On the essential spectrum of a class of singular matrix differential operators. II. Weyl's limit circles for the Hain-Lust operator whenever quasi-regularity conditions are not satisfied
  • 2008
  • Ingår i: Proceedings of the Royal Society of Edinburgh: Section A Mathematics. - Cambridge University Press. - 0308-2105. ; 138:1, s. 109-138
  • Tidskriftsartikel (refereegranskat)abstract
    • The essential spectrum of the singular matrix differential operator of mixed order determined by the operator matrix GRAPHICS is studied. Investigation of the essential spectrum of the corresponding self-adjoint operator is continued but; now without assuming that the quasi-regularity conditions are satisfied. New conditions that guarantee that the operator is semi-bounded from below are derived. It is proven that the essential spectrum of any self-adjoint operator associated with the matrix differential operator is given by the range range((mp - beta(2))/px(2)) in the case where the quasi-regularity conditions are not satisfied.
2.
  • Kurasov, Pavel, et al. (författare)
  • Wigner-von Neumann perturbations of a periodic potential: spectral singularities in bands
  • 2007
  • Ingår i: Mathematical Proceedings of the Cambridge Philosophical Society. - Cambridge University Press. - 0305-0041. ; 142:1, s. 161-183
  • Tidskriftsartikel (refereegranskat)abstract
    • Wigner-von Neumann type perturbations of the periodic one-dimensional Schrodinger operator are considered. The asymptotics of the solution to the generalized eigenfunction equation is investigated. It is proven that a subordinated solution and therefore art embedded eigenvalue may occur at the points of the absolutely continuous spectrum satisfying a certain resonance (quantization) condition between the frequencies of the perturbation, the frequency of the background potential and the corresponding quasimomentum.
  •  
Skapa referenser, mejla, bekava och länka
  • Resultat 1-2 av 2
Åtkomst
fritt online (1)
Typ av publikation
tidskriftsartikel (2)
Typ av innehåll
refereegranskat (2)
Författare/redaktör
Kurasov, Pavel (2)Ta bort avgränsningen
Naboko, Serguei (2)Ta bort avgränsningen
Lelyavin, Igor (1)
Lärosäte
Lunds universitet (2)
Språk
Engelska (2)

År

 
pil uppåt Stäng

Kopiera och spara länken för att återkomma till aktuell vy