[HTML][HTML] Unbounded products of operators and connections to Dirac-type operators
K Gustafson, MH Mortad - Bulletin des Sciences Mathématiques, 2014 - Elsevier
Let A and B be two densely defined unbounded closeable operators in a Hilbert space such
that their unbounded operator products AB and BA are also densely defined. Then all four …
that their unbounded operator products AB and BA are also densely defined. Then all four …
[PDF][PDF] On different concepts of closedness of linear operators
S Messirdi, B Messirdi, M Messirdi - OaM, Oper. Matrices, 2014 - academia.edu
The purpose of this paper is to introduce, by means of the extensions of almost closed
operators, the notion of almost closable linear operator acting in a Hilbert or Banach space …
operators, the notion of almost closable linear operator acting in a Hilbert or Banach space …
On random normal operators and their spectral measures
P Gaşpar - Journal of Theoretical Probability, 2019 - Springer
The main aim of this paper is to introduce and study the subclass of not necessarily
continuous, normal random operators, establishing connections with other subclasses of …
continuous, normal random operators, establishing connections with other subclasses of …
[PDF][PDF] Drazin invertibility of sum and product of closed linear operators
B MESSIRDI, S MESSIRDI… - Malaya Journal of …, 2014 - malayajournal.org
The paper present a survey of results concerning the fundamental properties of the Drazin
inverse for bounded operators and an interesting study of the Drazin inverse for a closed …
inverse for bounded operators and an interesting study of the Drazin inverse for a closed …
[PDF][PDF] On Selfadjoint Spectral Theory of Random Operators
P Gaspar - arXiv preprint arXiv:1701.06163, 2017 - arxiv.org
arXiv:1701.06163v1 [math.SP] 22 Jan 2017 Page 1 arXiv:1701.06163v1 [math.SP] 22 Jan 2017
ON SELFADJOINT SPECTRAL THEORY OF RANDOM OPERATORS PASTOREL GASPAR …
ON SELFADJOINT SPECTRAL THEORY OF RANDOM OPERATORS PASTOREL GASPAR …