Zobrazeno 1 - 10
of 73
pro vyhledávání: '"Benali, Abdelkader"'
Autor:
CHELLALI, CHERIFA1 chchellali@gmail.com, BENALI, ABDELKADER2 benali4848@gmail.com
Publikováno v:
Journal of Science & Arts. Dec2023, Vol. 23 Issue 4, p973-976. 4p.
Autor:
BENALI, ABDELKADER1 benali4848@gmail.com
Publikováno v:
Journal of Science & Arts. Sep2023, Vol. 23 Issue 3, p721-728. 8p.
In this paper we introduce and prove some properties of $(\alpha;\beta)$-normal operators according to semi-Hilbertian space structures. Furthermore we s,ate various inequalities between the A-operator norm and A-numerical radius of $(\alpha,\beta)$-
Externí odkaz:
http://arxiv.org/abs/1610.03462
In the present paper, we generalized some notions of bounded operators to un- bounded operators on Hilbert space such as k-quasihyponormal and k-paranormal unbounded operators. Furthermore, we extend the Kaplansky theorem for normal operators to some
Externí odkaz:
http://arxiv.org/abs/1602.02748
Autor:
BENALI, ABDELKADER1 benali4848@gmail.com
Publikováno v:
Journal of Science & Arts. Jun2023, Vol. 23 Issue 2, p481-488. 8p.
The purpose of this paper is to generalize a very famous result on products of normal operators, due to I. Kaplansky. The context of generalization is that of bounded hyponormal and unbounded normal operators on complex separable Hilbert spaces. Some
Externí odkaz:
http://arxiv.org/abs/1403.0523
Publikováno v:
International Journal of Analysis and Applications, Vol 18, Iss 4, Pp 624-632 (2020)
In this paper we present the results of the maximality of operators not nec-essarily bounded. For that, we will see the results obtained by operators in situation ofextension. Regarding the normal product of normal operators we seem to be the key tom
Externí odkaz:
https://doaj.org/article/0dff98927fcb48768f1bbced0df2da2d
Akademický článek
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Autor:
CHELLALI, CHERIFA1 chchellali@gmail.com, BENALI, ABDELKADER2 benali4848@gmail.com, AL-SHBEIL, ISRA3 i.shbeil@ju.edu.jo
Publikováno v:
Journal of Science & Arts. Mar2022, Vol. 22 Issue 1, p115-120. 6p.
Autor:
KEHAILI, ABDELKADER1 kehaili.aek@gmail.com, BENALI, ABDELKADER2 benali4848@gmail.com, HAKEM, ALI1 hakemali@yahoo.com
Publikováno v:
Journal of Science & Arts. Dec2021, Vol. 21 Issue 4, p991-1002. 12p.