NORMAL EXTENSIONS OF A SINGULAR MULTIPOINT DIFFERENTIAL OPERATOR OF FIRST ORDER


İSMAİLOV Z. , Mert R. O.

ELECTRONIC JOURNAL OF DIFFERENTIAL EQUATIONS, 2012 (SCI İndekslerine Giren Dergi) identifier identifier

  • Cilt numarası:
  • Basım Tarihi: 2012
  • Dergi Adı: ELECTRONIC JOURNAL OF DIFFERENTIAL EQUATIONS

Özet

In this work, we describe all normal extensions of the minimal operator generated by linear singular multipoint formally normal differential expression l - (l(1), l(2), l(3)), l(k) - d/dt + A(k) with selfadjoint operator coefficients A(k) in a Hilbert space. This is done as a direct sum of Hilbert spaces of vector-functions