Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel A new spectral approach in the matrix algebra: trace pseudospectrum. (English) Zbl 07805626 Bol. Soc. Parana. Mat. (3) 41, Paper No. 68, 11 p. (2023). MSC: 15A09 15A86 PDFBibTeX XMLCite \textit{A. Ammar} et al., Bol. Soc. Parana. Mat. (3) 41, Paper No. 68, 11 p. (2023; Zbl 07805626) Full Text: DOI
Ammar, Aymen; Bouchekoua, Ameni; Jeribi, Aref The pseudospectra of linear operator pencils in a Hilbert space. (English) Zbl 07746919 Afr. Mat. 34, No. 4, Paper No. 63, 13 p. (2023). MSC: 47A10 PDFBibTeX XMLCite \textit{A. Ammar} et al., Afr. Mat. 34, No. 4, Paper No. 63, 13 p. (2023; Zbl 07746919) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Bol. Soc. Mat. Mex., III. Ser. 29, No. 2, Paper No. 33, 1 p. (2023; Zbl 1523.47085) Full Text: DOI
Ammar, Aymen; Boutaf, Fatima Zohra; Jeribi, Aref New results on perturbations of \(\mathrm{p}\)-adic linear operators. (English) Zbl 1523.47084 Georgian Math. J. 30, No. 2, 173-184 (2023). MSC: 47S10 47A53 47A55 PDFBibTeX XMLCite \textit{A. Ammar} et al., Georgian Math. J. 30, No. 2, 173--184 (2023; Zbl 1523.47084) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Bol. Soc. Mat. Mex., III. Ser. 29, No. 1, Paper No. 18, 19 p. (2023; Zbl 1523.47083) Full Text: DOI
Ammar, Aymen; Fakhfakh, Slim; Jeribi, Aref Fredholm theory for demicompact linear relations. (English) Zbl 07615709 Appl. Gen. Topol. 23, No. 2, 425-436 (2022). Reviewer: Mohamed Zohry (Tétouan) MSC: 47A06 47A53 PDFBibTeX XMLCite \textit{A. Ammar} et al., Appl. Gen. Topol. 23, No. 2, 425--436 (2022; Zbl 07615709) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Bull. Iran. Math. Soc. 48, No. 5, 2463--2485 (2022; Zbl 07595369) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Random Matrices Theory Appl. 11, No. 3, Article ID 2250028, 29 p. (2022; Zbl 1503.47001) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Lazrag, Nawrez Pseudo \(S\)-spectrum in a right quaternionic Hilbert space. (English) Zbl 07491079 Linear Multilinear Algebra 70, No. 4, 581-605 (2022). MSC: 47A10 PDFBibTeX XMLCite \textit{A. Ammar} et al., Linear Multilinear Algebra 70, No. 4, 581--605 (2022; Zbl 07491079) Full Text: DOI
Ammar, Aymen; Daoud, Houcem; Jeribi, Aref The index of a linear relation under strictly singular perturbations. (English) Zbl 07486138 Adv. Oper. Theory 7, No. 1, Paper No. 11, 18 p. (2022). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Adv. Oper. Theory 7, No. 1, Paper No. 11, 18 p. (2022; Zbl 07486138) Full Text: DOI
Ammar, Aymen; Jeribi, Aref Spectral theory of multivalued linear operators. (English) Zbl 1471.47001 Boca Raton, FL: CRC Press/Apple Academic Press (ISBN 978-1-77188-966-7/hbk; 978-1-77463-938-2/pbk; 978-1-003-13112-0/ebook). xviii, 295 p. (2022). MSC: 47-01 47A06 PDFBibTeX XMLCite \textit{A. Ammar} and \textit{A. Jeribi}, Spectral theory of multivalued linear operators. Boca Raton, FL: CRC Press/Apple Academic Press (2022; Zbl 1471.47001) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Acta Appl. Math. 176, Paper No. 1, 14 p. (2021; Zbl 1481.47116) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel A new spectral approach in the matrix algebra: \(C\)-determinant pseudospectrum. (English. Russian original) Zbl 07411067 Russ. Math. 65, No. 7, 1-7 (2021); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2021, No. 7, 3-11 (2021). MSC: 47Axx 15Axx 65Fxx PDFBibTeX XMLCite \textit{A. Ammar} et al., Russ. Math. 65, No. 7, 1--7 (2021; Zbl 07411067); translation from Izv. Vyssh. Uchebn. Zaved., Mat. 2021, No. 7, 3--11 (2021) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Lazrag, Nawrez Sequence of linear operators converging in the generalized sense and its essential pseudospectra. (English) Zbl 07361676 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., 147-155 (2021). MSC: 47A53 39B42 PDFBibTeX XMLCite \textit{A. Ammar} et al., in: Operator theory. Proceedings of the international conference on operator theory, Hammamet, Tunisia, April 30 -- May 3, 2018. Berlin: De Gruyter. 147--155 (2021; Zbl 07361676) Full Text: DOI
Ammar, Aymen; Bouchekoua, Ameni; Jeribi, Aref Some results of S-pseudospectra of bounded operators in a Hilbert space. (English) Zbl 07361674 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: 47A53 47A55 47A10 PDFBibTeX XMLCite \textit{A. Ammar} et al., in: Operator theory. Proceedings of the international conference on operator theory, Hammamet, Tunisia, April 30 -- May 3, 2018. Berlin: De Gruyter. 121--129 (2021; Zbl 07361674) Full Text: DOI
Ammar, Aymen; Daoud, Houcem; Jeribi, Aref Pseudospectra of multivalued linear operators. (English) Zbl 07361671 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., 85-100 (2021). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., in: Operator theory. Proceedings of the international conference on operator theory, Hammamet, Tunisia, April 30 -- May 3, 2018. Berlin: De Gruyter. 85--100 (2021; Zbl 07361671) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Bol. Soc. Mat. Mex., III. Ser. 27, No. 1, Paper No. 17, 23 p. (2021; Zbl 07342800) Full Text: DOI
Ammar, Aymen; Bouchekoua, Ameni; Jeribi, Aref The local spectral theory for linear relations involving SVEP. (English) Zbl 07342070 Mediterr. J. Math. 18, No. 2, Paper No. 77, 27 p. (2021). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Mediterr. J. Math. 18, No. 2, Paper No. 77, 27 p. (2021; Zbl 07342070) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel The condition pseudospectrum of a operator pencil. (English) Zbl 1521.47026 Asian-Eur. J. Math. 14, No. 4, Article ID 2150057, 12 p. (2021). Reviewer: Yaudat Sultanaev (Ufa) MSC: 47A56 47A10 PDFBibTeX XMLCite \textit{A. Ammar} et al., Asian-Eur. J. Math. 14, No. 4, Article ID 2150057, 12 p. (2021; Zbl 1521.47026) Full Text: DOI
Ammar, Aymen; Daoud, Houcem; Jeribi, Aref \(\mathcal{S}\)-pseudospectra and \(\mathcal{S}\)-essential pseudospectra. (English) Zbl 1474.47006 Mat. Vesn. 72, No. 2, 95-105 (2020). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Mat. Vesn. 72, No. 2, 95--105 (2020; Zbl 1474.47006) Full Text: Link Link
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel Some description of essential structured approximate and defect pseudospectrum. (English) Zbl 1514.47005 Korean J. Math. 28, No. 4, 673-697 (2020). MSC: 47A10 47B01 PDFBibTeX XMLCite \textit{A. Ammar} et al., Korean J. Math. 28, No. 4, 673--697 (2020; Zbl 1514.47005) Full Text: DOI
Ammar, Aymen; Fakhfakh, Slim; Jeribi, Aref Shechter spectra and relatively demicompact linear relations. (English) Zbl 07308171 Commun. Korean Math. Soc. 35, No. 2, 499-516 (2020). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Commun. Korean Math. Soc. 35, No. 2, 499--516 (2020; Zbl 07308171) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Lazrag, Nawrez Sequence of multivalued linear operators converging in the generalized sense. (English) Zbl 07290389 Bull. Iran. Math. Soc. 46, No. 6, 1697-1729 (2020). MSC: 47A06 39B42 PDFBibTeX XMLCite \textit{A. Ammar} et al., Bull. Iran. Math. Soc. 46, No. 6, 1697--1729 (2020; Zbl 07290389) Full Text: DOI
Ammar, Aymen; Fakhfakh, Slim; Jeribi, Aref Demicompact operators and ellipsoid spectra on quaternionic Hilbert spaces. (English) Zbl 1441.47098 Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 114, No. 3, Paper No. 149, 10 p. (2020). MSC: 47S05 47B02 47A10 PDFBibTeX XMLCite \textit{A. Ammar} et al., Rev. R. Acad. Cienc. Exactas Fís. Nat., Ser. A Mat., RACSAM 114, No. 3, Paper No. 149, 10 p. (2020; Zbl 1441.47098) Full Text: DOI
Ammar, Aymen; Bouchekoua, Ameni; Jeribi, Aref The \(\varepsilon \)-pseudospectra and the essential \(\varepsilon \)-pseudospectra of linear relations. (English) Zbl 1439.47003 J. Pseudo-Differ. Oper. Appl. 11, No. 2, 879-915 (2020). MSC: 47A06 47A10 47A53 PDFBibTeX XMLCite \textit{A. Ammar} et al., J. Pseudo-Differ. Oper. Appl. 11, No. 2, 879--915 (2020; Zbl 1439.47003) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., J. Pseudo-Differ. Oper. Appl. 11, No. 1, 491--504 (2020; Zbl 1444.47021) Full Text: DOI
Ammar, Aymen; Bouchekoua, Ameni; Jeribi, Aref Some approximation results in a non-Archimedean Banach space. (English) Zbl 1509.47112 Funct. Anal. Approx. Comput. 12, No. 1, 33-50 (2020). MSC: 47S10 47A58 39B42 PDFBibTeX XMLCite \textit{A. Ammar} et al., Funct. Anal. Approx. Comput. 12, No. 1, 33--50 (2020; Zbl 1509.47112) Full Text: Link
Ammar, Aymen; Bouchekoua, Ameni; Jeribi, Aref Pseudospectra in a non-Archimedean Banach space and essential pseudospectra in \(\mathbb{E}_\omega\). (English) Zbl 1513.47012 Filomat 33, No. 12, 3961-3976 (2019). MSC: 47A10 47S10 PDFBibTeX XMLCite \textit{A. Ammar} et al., Filomat 33, No. 12, 3961--3976 (2019; Zbl 1513.47012) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Zayed, Mayssa A characterization of \(\mathcal{S}\)-condition pseudospectrum of multivalued linear operators. (English) Zbl 1498.47006 Filomat 33, No. 15, 5037-5050 (2019). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Filomat 33, No. 15, 5037--5050 (2019; Zbl 1498.47006) Full Text: DOI
Heraiz, Toufik; Ammar, Aymen; Jeribi, Aref Essential approximate point and essential defect spectrum of a sequence of linear operators in Banach spaces. (English) Zbl 1463.47020 Methods Funct. Anal. Topol. 25, No. 4, 373-380 (2019). Reviewer: Anatoly N. Kochubei (Kyïv) MSC: 47A10 47A55 47B01 PDFBibTeX XMLCite \textit{T. Heraiz} et al., Methods Funct. Anal. Topol. 25, No. 4, 373--380 (2019; Zbl 1463.47020) Full Text: Link
Ammar, Aymen; Boukettaya, Bilel; Jeribi, Aref Relationship between the left-right Jeribi essential spectra and the left-right Weyl essential spectra of closed densely defined linear operators. (English) Zbl 1499.47006 Lib. Math. (N.S.) 39, No. 2, 13-26 (2019). MSC: 47A10 47A53 47A55 PDFBibTeX XMLCite \textit{A. Ammar} et al., Lib. Math. (N.S.) 39, No. 2, 13--26 (2019; Zbl 1499.47006)
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel Generalized trace pseudo-spectrum of matrix pencils. (English) Zbl 1442.15019 Cubo 21, No. 2, 65-76 (2019). MSC: 15A22 15A18 15A09 15A86 15A60 PDFBibTeX XMLCite \textit{A. Ammar} et al., Cubo 21, No. 2, 65--76 (2019; Zbl 1442.15019) Full Text: DOI
Ammar, A.; Jeribi, A.; Saadaoui, B. On some classes of demicompact linear relation and some results of essential pseudospectra. (English) Zbl 1501.47004 Mat. Stud. 52, No. 2, 195-210 (2019). Reviewer: Dana Simona Bereanu (Bucureşti) MSC: 47A06 47A55 47A08 PDFBibTeX XMLCite \textit{A. Ammar} et al., Mat. Stud. 52, No. 2, 195--210 (2019; Zbl 1501.47004) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel Measure of noncompactness, essential approximation and defect pseudospectrum. (English) Zbl 1438.47012 Methods Funct. Anal. Topol. 25, No. 1, 1-11 (2019). Reviewer: Anatoly N. Kochubei (Kyïv) MSC: 47A10 47B01 47A53 47A55 PDFBibTeX XMLCite \textit{A. Ammar} et al., Methods Funct. Anal. Topol. 25, No. 1, 1--11 (2019; Zbl 1438.47012) Full Text: Link
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel Browder essential approximate pseudospectrum and defect pseudospectrum on a Banach space. (English) Zbl 1447.47023 Extr. Math. 34, No. 1, 29-40 (2019). MSC: 47B01 47A10 47A55 PDFBibTeX XMLCite \textit{A. Ammar} et al., Extr. Math. 34, No. 1, 29--40 (2019; Zbl 1447.47023) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Lazrag, Nawrez Sequence of linear operators in non-Archimedean Banach spaces. (English) Zbl 07110775 Mediterr. J. Math. 16, No. 5, Paper No. 130, 20 p. (2019). MSC: 47A10 47A55 PDFBibTeX XMLCite \textit{A. Ammar} et al., Mediterr. J. Math. 16, No. 5, Paper No. 130, 20 p. (2019; Zbl 07110775) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel The essential approximate pseudospectrum and related results. (English) Zbl 1485.47006 Filomat 32, No. 6, 2139-2151 (2018). MSC: 47A10 47B01 47A55 PDFBibTeX XMLCite \textit{A. Ammar} et al., Filomat 32, No. 6, 2139--2151 (2018; Zbl 1485.47006) Full Text: DOI
Ammar, Aymen; Jedidi, Omar; Jeribi, Aref Stability of some essential spectra of closed linear relations on Banach spaces. (English) Zbl 1413.47008 Afr. Mat. 29, No. 7-8, 987-993 (2018). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Afr. Mat. 29, No. 7--8, 987--993 (2018; Zbl 1413.47008) Full Text: DOI
Ammar, Aymen; Bouzayeni, Faten; Jeribi, Aref Perturbation of unbounded linear operators by \(\gamma \)-relative boundedness. (English) Zbl 06983434 Ric. Mat. 67, No. 2, 433-445 (2018). MSC: 47A05 PDFBibTeX XMLCite \textit{A. Ammar} et al., Ric. Mat. 67, No. 2, 433--445 (2018; Zbl 06983434) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Saadaoui, Bilel A characterization of essential pseudospectra of the multivalued operator matrix. (English) Zbl 06945819 Anal. Math. Phys. 8, No. 3, 325-350 (2018). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Anal. Math. Phys. 8, No. 3, 325--350 (2018; Zbl 06945819) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Funct. Anal. Approx. Comput. 10, No. 2, 13--21 (2018; Zbl 06902752) Full Text: Link
Ammar, Aymen; Daoud, Houcem; Jeribi, Aref Demicompact and \(k\)-\(D\)-set-contractive multivalued linear operators. (English) Zbl 06879881 Mediterr. J. Math. 15, No. 2, Paper No. 41, 18 p. (2018). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Mediterr. J. Math. 15, No. 2, Paper No. 41, 18 p. (2018; Zbl 06879881) Full Text: DOI
Ammar, Aymen; Jeribi, Aref The essential pseudo-spectra of a sequence of linear operators. (English) Zbl 1435.47021 Complex Anal. Oper. Theory 12, No. 3, 835-848 (2018). Reviewer: David Kapanadze (Tbilisi) MSC: 47A53 47A10 47B01 47A08 47A58 PDFBibTeX XMLCite \textit{A. Ammar} and \textit{A. Jeribi}, Complex Anal. Oper. Theory 12, No. 3, 835--848 (2018; Zbl 1435.47021) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel Global bifurcation from the real leading eigenvalue of the transport operator. (English) Zbl 07499742 J. Comput. Theor. Transp. 46, No. 4, 229-241 (2017). MSC: 82-XX PDFBibTeX XMLCite \textit{A. Ammar} et al., J. Comput. Theor. Transp. 46, No. 4, 229--241 (2017; Zbl 07499742) Full Text: DOI
Ammar, Aymen; Jeribi, Aref; Mahfoudhi, Kamel A characterization of the essential approximation pseudospectrum on a Banach space. (English) Zbl 1483.47010 Filomat 31, No. 11, 3599-3610 (2017). MSC: 47A10 47B01 PDFBibTeX XMLCite \textit{A. Ammar} et al., Filomat 31, No. 11, 3599--3610 (2017; Zbl 1483.47010) Full Text: DOI
Ammar, Aymen; Boukattaya, Bilel; Jeribi, Aref Essentially semi-regular linear relations. (English) Zbl 1474.47005 Facta Univ., Ser. Math. Inf. 32, No. 4, 421-434 (2017). MSC: 47A06 47A53 47A55 PDFBibTeX XMLCite \textit{A. Ammar} et al., Facta Univ., Ser. Math. Inf. 32, No. 4, 421--434 (2017; Zbl 1474.47005)
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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Int. J. Anal. Appl. 15, No. 1, 1--7 (2017; Zbl 1463.47016) Full Text: Link
Ammar, Aymen; Fakhfakh, Slim; Jeribi, Aref A new stability of the \(S\)-essential spectrum of multivalued linear operators. (English) Zbl 1463.47010 Int. J. Anal. Appl. 14, No. 1, 1-8 (2017). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., Int. J. Anal. Appl. 14, No. 1, 1--8 (2017; Zbl 1463.47010) Full Text: Link
Ammar, Aymen; Jeribi, Aref; Saadaoui, Bilel Frobenius-Schur factorization for multivalued \(2\times2\) matrices linear operator. (English) Zbl 1476.47004 Mediterr. J. Math. 14, No. 1, Paper No. 29, 29 p. (2017). MSC: 47A06 47A08 47A68 PDFBibTeX XMLCite \textit{A. Ammar} et al., Mediterr. J. Math. 14, No. 1, Paper No. 29, 29 p. (2017; Zbl 1476.47004) Full Text: DOI
Ammar, Aymen; Fakhfakh, Slim; Jeribi, Aref Stability of the essential spectrum of the diagonally and off-diagonally dominant block matrix linear relations. (English) Zbl 06768756 J. Pseudo-Differ. Oper. Appl. 7, No. 4, 493-509 (2016). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., J. Pseudo-Differ. Oper. Appl. 7, No. 4, 493--509 (2016; Zbl 06768756) Full Text: DOI
Ammar, Aymen; Daoud, Houcem; Jeribi, Aref The stability of pseudospectra and essential pseudospectra of linear relations. (English) Zbl 06768755 J. Pseudo-Differ. Oper. Appl. 7, No. 4, 473-491 (2016). MSC: 47A06 PDFBibTeX XMLCite \textit{A. Ammar} et al., J. Pseudo-Differ. Oper. Appl. 7, No. 4, 473--491 (2016; Zbl 06768755) Full Text: DOI
Ammar, Aymen; Boukettaya, Bilel; Jeribi, Aref A note on the essential pseudospectra and application. (English) Zbl 1394.47004 Linear Multilinear Algebra 64, No. 8, 1474-1483 (2016). Reviewer: Hassane Zguitti (Nador) MSC: 47A10 47A53 47A55 47A13 PDFBibTeX XMLCite \textit{A. Ammar} et al., Linear Multilinear Algebra 64, No. 8, 1474--1483 (2016; Zbl 1394.47004) Full Text: DOI
Ammar, Aymen; Jeribi, Aref The Weyl essential spectrum of a sequence of linear operators in Banach spaces. (English) Zbl 1330.47024 Indag. Math., New Ser. 27, No. 1, 282-295 (2016). MSC: 47A58 47A10 PDFBibTeX XMLCite \textit{A. Ammar} and \textit{A. Jeribi}, Indag. Math., New Ser. 27, No. 1, 282--295 (2016; Zbl 1330.47024) Full Text: DOI
Ammar, Aymen; Diagana, Toka; Jeribi, Aref Perturbations of Fredholm linear relations in Banach spaces with application to \(3 \times 3\)-block matrices of linear relations. (English) Zbl 1331.47002 Arab J. Math. Sci. 22, No. 1, 59-76 (2016). MSC: 47A06 47A53 PDFBibTeX XMLCite \textit{A. Ammar} et al., Arab J. Math. Sci. 22, No. 1, 59--76 (2016; Zbl 1331.47002) 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 PDFBibTeX XMLCite \textit{F. Abdmouleh} et al., J. Comput. Theor. Transp. 44, No. 3, 141--153 (2015; Zbl 07499228) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Filomat 29, No. 9, 1983--1994 (2015; Zbl 1464.47003) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Funct. Anal. Approx. Comput. 7, No. 1, 15--28 (2015; Zbl 1355.47007) 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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Boll. Unione Mat. Ital. 8, No. 3, 189--204 (2015; Zbl 1330.47005) Full Text: DOI
Ammar, Aymen; Daoud, Houcem; Jeribi, Aref Pseudospectra and essential pseudospectra of multivalued linear relations. (English) Zbl 1357.47006 Mediterr. J. Math. 12, No. 4, 1377-1395 (2015). Reviewer: Matheus Cheque Bortolan (Lima) MSC: 47A06 47A13 47A53 PDFBibTeX XMLCite \textit{A. Ammar} et al., Mediterr. J. Math. 12, No. 4, 1377--1395 (2015; Zbl 1357.47006) 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 PDFBibTeX XMLCite \textit{F. Abdmouleh} et al., Mediterr. J. Math. 12, No. 3, 1019--1031 (2015; Zbl 1354.47003) Full Text: DOI
Ammar, A.; Dhahri, M. Zerai; Jeribi, A. A characterization of \(S\)-essential spectrum by means of measure of non-strict-singularity and application. (English) Zbl 1339.47018 Azerb. J. Math. 5, No. 1, 73-88 (2015). Reviewer: Hassane Zguitti (Nador) MSC: 47A53 47A55 47A10 PDFBibTeX XMLCite \textit{A. Ammar} et al., Azerb. J. Math. 5, No. 1, 73--88 (2015; Zbl 1339.47018)
Benharrat, Mohammed; Ammar, Aymen; Jeribi, Aref; Messirdi, Bekkai On the Kato, semi-regular and essentially semi-regular spectra. (English) Zbl 1352.47007 Funct. Anal. Approx. Comput. 6, No. 2, 9-22 (2014). MSC: 47A10 47A55 PDFBibTeX XMLCite \textit{M. Benharrat} et al., Funct. Anal. Approx. Comput. 6, No. 2, 9--22 (2014; Zbl 1352.47007) Full Text: Link
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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Acta Math. Sci., Ser. B, Engl. Ed. 34, No. 6, 1922--1934 (2014; Zbl 1340.47024) 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 PDFBibTeX XMLCite \textit{T. Álvarez} et al., Colloq. Math. 135, No. 2, 171--186 (2014; Zbl 1318.47005) 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 PDFBibTeX XMLCite \textit{T. Álvarez} et al., Math. Methods Appl. Sci. 37, No. 5, 620--644 (2014; Zbl 1331.47001) Full Text: DOI
Ammar, Aymen; Jeribi, Aref Measures of noncompactness and essential pseudospectra on Banach space. (English) Zbl 1321.47084 Math. Methods Appl. Sci. 37, No. 3, 447-452 (2014). Reviewer: Józef Banaś (Rzeszów) MSC: 47B40 47A10 PDFBibTeX XMLCite \textit{A. Ammar} and \textit{A. Jeribi}, Math. Methods Appl. Sci. 37, No. 3, 447--452 (2014; Zbl 1321.47084) 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 PDFBibTeX XMLCite \textit{A. Ammar} and \textit{A. Jeribi}, Extr. Math. 28, No. 1, 95--112 (2013; Zbl 1308.47012)
Ammar, Aymen; Jeribi, Aref A characterization of the essential pseudospectra on a Banach space. (English) Zbl 1296.47004 Arab. J. Math. 2, No. 2, 139-145 (2013). Reviewer: Mohamed Zohry (Tétouan) MSC: 47A10 PDFBibTeX XMLCite \textit{A. Ammar} and \textit{A. Jeribi}, Arab. J. Math. 2, No. 2, 139--145 (2013; Zbl 1296.47004) Full Text: DOI
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 PDFBibTeX XMLCite \textit{F. Abdmouleh} et al., Math. Slovaca 63, No. 2, 299--320 (2013; Zbl 1324.47025) Full Text: DOI
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 PDFBibTeX XMLCite \textit{A. Ammar} et al., Ann. Funct. Anal. 4, No. 2, 153--170 (2013; Zbl 1261.47009) Full Text: DOI EMIS