| Autor: |
Gherbi, Abdellah, Messirdi, Sanaa, Messirdi, Bekkai |
| Předmět: |
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| Zdroj: |
Asian-European Journal of Mathematics; Nov2020, Vol. 13 Issue 07, pN.PAG-N.PAG, 9p |
| Abstrakt: |
In this paper, almost closed subspaces and almost closed linear operators are described in a Hilbert space. We show Neubauer's lemma and we give necessary and sufficient conditions for an almost closed operator to be with closed range and we exhibit sufficient conditions under which it is either closed or closable. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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