Ammar, Aymen; Daoud, Houcem; Jeribi, Aref New results of spectra and pseudospectra of multivalued linear operators. (English) Zbl 07920304 Funct. Anal. Approx. Comput. 16, No. 2, 1-18 (2024). MSC: 47A55 × Cite Format Result Cite Review PDF Full Text: Link
Ammar, Aymen; Bouchekoua, Ameni; Lazrag, Nawrez The pseudospectra of bounded linear operators on quasi normed space. (English) Zbl 07741910 Commun. Korean Math. Soc. 38, No. 3, 773-786 (2023). MSC: 47A10 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Boutaf, Fatima Zohra; Jeribi, Aref Correction to: “Some results of essential spectra of sum of two bounded linear operators in non-Archimedean Banach space”. (English) Zbl 1523.47085 Bol. Soc. Mat. Mex., III. Ser. 29, No. 2, Paper No. 33, 1 p. (2023). MSC: 47S10 47A53 47A10 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Boutaf, Fatima Zohra; Jeribi, Aref Some results of essential spectra of sum of two bounded linear operators in non-Archimedean Banach space. (English) Zbl 1523.47083 Bol. Soc. Mat. Mex., III. Ser. 29, No. 1, Paper No. 18, 19 p. (2023); correction ibid. 29, No. 2, Paper No. 33, 1 p. (2023). MSC: 47S10 47A53 47A55 47A10 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Ezzadam, Aicha; Jeribi, Aref A characterization of the essential spectra of \(2\times 2\) block matrices of linear relations. (English) Zbl 07595369 Bull. Iran. Math. Soc. 48, No. 5, 2463-2485 (2022). MSC: 47A06 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Saadaoui, Bilel A new decomposition for multivalued \(3\times 3\) matrices. (English) Zbl 1503.47001 Random Matrices Theory Appl. 11, No. 3, Article ID 2250028, 29 p. (2022). MSC: 47A06 47A08 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Saadaoui, Bilel Essential S-spectrum for quaternionic quasi-compact operators on right quaternionic Hilbert spaces. (English) Zbl 1481.47116 Acta Appl. Math. 176, Paper No. 1, 14 p. (2021). MSC: 47S05 47A06 47A55 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Bouchekoua, Ameni; Jeribi, Aref Some results of S-pseudospectra of bounded operators in a Hilbert space. (English) Zbl 1542.47032 Jeribi, Aref (ed.), Operator theory. Proceedings of the international conference on operator theory, Hammamet, Tunisia, April 30 – May 3, 2018. Berlin: De Gruyter. De Gruyter Proc. Math., 121-129 (2021). MSC: 47B02 47A53 47A55 47A10 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Saadaoui, Bilel Some decomposition for multivalued matrix pencils linear operator. (English) Zbl 07342800 Bol. Soc. Mat. Mex., III. Ser. 27, No. 1, Paper No. 17, 23 p. (2021). MSC: 47A06 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel The condition pseudospectrum subset and related results. (English) Zbl 1444.47021 J. Pseudo-Differ. Oper. Appl. 11, No. 1, 491-504 (2020). Reviewer: Alexei Yu. Karlovich (Lisboa) MSC: 47A53 47A55 54B35 47A12 47B01 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel A characterization of the condition pseudospectrum on Banach space. (English) Zbl 06902752 Funct. Anal. Approx. Comput. 10, No. 2, 13-21 (2018). MSC: 47A53 47A55 54B35 47A13 × Cite Format Result Cite Review PDF Full Text: Link
Ammar, Aymen Some results on semi-Fredholm perturbations of multivalued linear operators. (English) Zbl 1502.47001 Linear Multilinear Algebra 66, No. 7, 1311-1332 (2018). MSC: 47A06 47A55 47A53 47A10 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Djaidja, Noui; Jeribi, Aref The essential spectrum of a sequence of linear operators in Banach spaces. (English) Zbl 1463.47016 Int. J. Anal. Appl. 15, No. 1, 1-7 (2017). MSC: 47A10 47B01 × Cite Format Result Cite Review PDF Full Text: Link
Ammar, Aymen Some properties of the Wolf and Weyl essential spectra of a sequence of linear operators \(\nu\)-convergent. (English) Zbl 1458.47006 Indag. Math., New Ser. 28, No. 2, 424-435 (2017). MSC: 47A10 47B01 47A58 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen A characterization of some subsets of essential spectra of a multivalued linear operator. (English) Zbl 1454.47006 Complex Anal. Oper. Theory 11, No. 1, 175-196 (2017). MSC: 47A06 47A10 × Cite Format Result Cite Review PDF Full Text: DOI
Abdmouleh, Faiçal; Ammar, Aymen; Jeribi, Aref A characterization of the pseudo-Browder essential spectra of linear operators and application to a transport equation. (English) Zbl 07499228 J. Comput. Theor. Transp. 44, No. 3, 141-153 (2015). MSC: 82-XX × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Dhahri, Mohammed Zerai; Jeribi, Aref Stability of essential approximate point spectrum and essential defect spectrum of linear operator. (English) Zbl 1464.47003 Filomat 29, No. 9, 1983-1994 (2015). MSC: 47A10 47A53 47A55 47H08 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Dhahri, Mohammed Zerai; Jeribi, Aref Some properties of the \(M\)-essential spectra of closed linear operator on a Banach space. (English) Zbl 1355.47007 Funct. Anal. Approx. Comput. 7, No. 1, 15-28 (2015). MSC: 47A53 47A55 47A10 × Cite Format Result Cite Review PDF Full Text: Link
Ammar, Aymen; Dhahri, Mohammed Zerai; Jeribi, Aref Some properties of upper triangular \(3\times 3\)-block matrices of linear relations. (English) Zbl 1330.47005 Boll. Unione Mat. Ital. 8, No. 3, 189-204 (2015). MSC: 47A06 47A53 × Cite Format Result Cite Review PDF Full Text: DOI
Abdmouleh, Faiçal; Àlvarez, Teresa; Ammar, Aymen; Jeribi, Aref Spectral mapping theorem for Rakocević and Schmoeger essential spectra of a multivalued linear operator. (English) Zbl 1354.47003 Mediterr. J. Math. 12, No. 3, 1019-1031 (2015). Reviewer: Dana Simona Bereanu (Bucureşti) MSC: 47A06 47A10 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Boukettaya, Bilel; Jeribi, Aref Stability of the \(S\)-left and \(S\)-right essential spectra of a linear operator. (English) Zbl 1340.47024 Acta Math. Sci., Ser. B, Engl. Ed. 34, No. 6, 1922-1934 (2014). MSC: 47A53 47A55 47A10 × Cite Format Result Cite Review PDF Full Text: DOI
Álvarez, Teresa; Ammar, Aymen; Jeribi, Aref A characterization of some subsets of \(S\)-essential spectra of a multivalued linear operator. (English) Zbl 1318.47005 Colloq. Math. 135, No. 2, 171-186 (2014). Reviewer: Valerii V. Obukhovskij (Voronezh) MSC: 47A06 47A10 47A25 47A53 × Cite Format Result Cite Review PDF Full Text: DOI
Álvarez, Teresa; Ammar, Aymen; Jeribi, Aref On the essential spectra of some matrix of linear relations. (English) Zbl 1331.47001 Math. Methods Appl. Sci. 37, No. 5, 620-644 (2014). Reviewer: Maryam Khosravi (Kerman) MSC: 47A06 47A55 47A25 × Cite Format Result Cite Review PDF Full Text: DOI
Ammar, Aymen; Jeribi, Aref A characterization of the essential pseudospectra and application to a transport equation. (English) Zbl 1308.47012 Extr. Math. 28, No. 1, 95-112 (2013). Reviewer: Janko Bračič (Ljubljana) MSC: 47A53 47A10 × Cite Format Result Cite Review PDF
Abdmouleh, Faiçal; Ammar, Aymen; Jeribi, Aref Stability of the \(\mathbf S\)-essential spectra on a Banach space. (English) Zbl 1324.47025 Math. Slovaca 63, No. 2, 299-320 (2013). MSC: 47A53 47A55 × Cite Format Result Cite Review PDF Full Text: DOI OA License
Ammar, Aymen; Jeribi, Aref; Moalla, Nedra A note on the spectra of a \(3 \times 3\) operator matrix and application. (English) Zbl 1261.47009 Ann. Funct. Anal. 4, No. 2, 153-170 (2013). MSC: 47A10 47A53 47A55 × Cite Format Result Cite Review PDF Full Text: DOI EMIS