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Memorias de investigación
Research Publications in journals:
Unbounded B-Fredholm operators on Hilbert spaces
Year:2008
Research Areas
  • Mathematics
Information
Abstract
This paper is concerned with the study of a class of closed linear operators densely defined on a Hilbert space H called B-Fredholm operators. We characterize a B-Fredholm operator as the direct sum of a Fredholm closed operator and a bounded nilpotent operator. The notion of index of a B-Fredholm operator is introduced and a characterization of B-Fredholm operators with index cero in terms of the sum of a Drazin closed operator and a finite-rank operator is given. We analyze the properties of the powers of T of a closed B-Fredholm operator and we establish a spectral mapping theorem.
International
Si
JCR
Si
Title
PROCEEDINGS OF THE EDINBURGH MATHEMATICAL SOCIETY
ISBN
0013-0915
Impact factor JCR
0,529
Impact info
Volume
51
Journal number
0
From page
285
To page
296
Month
ENERO
Ranking
Participants
  • Participante: MOHAMMED BERKANI (UNIVERSIDAD MOHAMMED I)
  • Autor: Blanca Nieves Castro Gonzalez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Sistemas Singulares e Inversas Generalizaciones
  • Departamento: Matemática Aplicada (Facultad de Informática)
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