Edit Profile (opens in new tab) Berkani, Mohammed Co-Author Distance Author ID: berkani.mohammed Published as: Berkani, M.; Berkani, Mohammed External Links: MGP Documents Indexed: 49 Publications since 1987 Reviewing Activity: 7 Reviews Co-Authors: 17 Co-Authors with 33 Joint Publications 224 Co-Co-Authors all top 5 Co-Authors 15 single-authored 11 Zariouh, Hassan 5 Sarih, Mustapha 4 Kachad, Mohammed 2 Aiena, Pietro 2 Amouch, Mohamed 2 Arroud, A. 2 Esterle, Jean 2 Ouahab, Abdelmalek 2 Živković-Zlatanović, Snežana Č. 1 Djordjević, Slaviša V. 1 El Harchaoui, Mimoun 1 Gay, Roger 1 Koliha, Jerry J. 1 Medková, Dagmar 1 Moalla, Nedra 1 Mokhtari, Abdelkader 1 Zguitti, Hassane all top 5 Serials 5 Mathematica Bohemica 4 Studia Mathematica 4 Mediterranean Journal of Mathematics 2 Acta Scientiarum Mathematicarum 2 Matematički Vesnik 2 Proceedings of the American Mathematical Society 2 Proceedings of the Edinburgh Mathematical Society. Series II 2 Rendiconti del Circolo Matemàtico di Palermo. Serie II 2 Bulletin of the Korean Mathematical Society 2 Filomat 2 Complex Analysis and Operator Theory 2 Functional Analysis, Approximation and Computation 1 Journal of Mathematical Analysis and Applications 1 Demonstratio Mathematica 1 Glasgow Mathematical Journal 1 Integral Equations and Operator Theory 1 Journal of the London Mathematical Society. Second Series 1 Mathematische Zeitschrift 1 Publicationes Mathematicae Debrecen 1 Bulletin de la Société Matheḿatique de Belgique. Série B 1 Complex Variables. Theory and Application 1 Acta Mathematica Universitatis Comenianae. New Series 1 Aequationes Mathematicae 1 Mathematical Proceedings of the Royal Irish Academy 1 Acta Mathematica Sinica. English Series 1 Journal of the Australian Mathematical Society 1 Sarajevo Journal of Mathematics 1 Bollettino di Matematica Pura e Applicata all top 5 Fields 43 Operator theory (47-XX) 9 Functional analysis (46-XX) 1 Associative rings and algebras (16-XX) 1 \(K\)-theory (19-XX) 1 Abstract harmonic analysis (43-XX) 1 Global analysis, analysis on manifolds (58-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 39 Publications have been cited 617 times in 197 Documents Cited by ▼ Year ▼ On a class of quasi-Fredholm operators. Zbl 0939.47010Berkani, M. 80 1999 On semi B-Fredholm operators. Zbl 0995.47008Berkani, M.; Sarih, M. 74 2001 Weyl type theorems for bounded linear operators. Zbl 1050.47014Berkani, M.; Koliha, J. J. 70 2003 Index of B-Fredholm operators and generalization of a Weyl theorem. Zbl 0996.47015Berkani, M. 68 2002 Restriction of an operator to the range of its powers. Zbl 0978.47011Berkani, M. 38 2000 B-Weyl spectrum and poles of the resolvent. Zbl 1043.47004Berkani, M. 35 2002 Generalized Weyl’s theorem and hyponormal operators. Zbl 1061.47021Berkani, M.; Arroud, A. 24 2004 Extended Weyl type theorems. Zbl 1211.47011Berkani, M.; Zariouh, H. 24 2009 An Atkinson-type theorem for B-Fredholm operators. Zbl 1005.47012Berkani, M.; Sarih, M. 23 2001 On the property \((gw)\). Zbl 1188.47011Amouch, Mohammed; Berkani, Mohammed 23 2008 New extended Weyl type theorems. Zbl 1258.47020Berkani, M.; Zariouh, H. 17 2010 On the equivalence of Weyl theorem and generalized Weyl theorem. Zbl 1116.47015Berkani, M. 14 2007 Browder-type theorems and SVEP. Zbl 1241.47008Berkani, Mohammed; Sarih, Mustapha; Zariouh, Hassan 11 2011 Single valued extension property and generalized Weyl’s theorem. Zbl 1114.47015Berkani, M.; Castro, N.; Djordjević, S. V. 10 2006 Inversion of the local Pompéiu transform in quaternion hyperbolic space – the case of two balls. (Inversion de la transformation de Pompéiu locale dans l’espace hyperbolique quaternionique – cas des deux boules.) Zbl 1037.43013Berkani, Mohammed; el Harchaoui, Mimoun; Gay, Roger 9 2000 B-Fredholm spectra and Riesz perturbations. Zbl 1464.47009Berkani, M.; Zariouh, H. 7 2015 Unbounded b-Fredholm operators on Hilbert spaces. Zbl 1160.47008Berkani, M.; Castro-González, N. 7 2008 Weyl type-theorems for direct sums. Zbl 1263.47016Berkani, Mohammed; Zariouh, Hassan 7 2012 On the B-Fredholm alternative. Zbl 1365.47002Berkani, Mohammed 7 2013 New Browder and Weyl type theorems. Zbl 1325.47028Berkani, Mohammed; Kachad, Mohammed 6 2015 B-Fredholm properties of closed invertible operators. Zbl 1427.47003Berkani, M.; Moalla, N. 6 2016 Spectral application theorem for essential quasi-Fredholm spectra. (Théorème de l’application spectrale pour le spectre essentiel quasi-Fredholm.) Zbl 0870.47003Berkani, M.; Ouahab, A. 6 1997 B-Fredholm elements in rings and algebras. Zbl 1399.47050Berkani, Mohammed 6 2018 Preservation of property \((gw)\) under perturbations. Zbl 1199.47068Berkani, Mohammed; Amouch, Mohamed 6 2008 A note on the index of \(B\)-Fredholm operators. Zbl 1056.47011Berkani, M.; Medková, D. 5 2004 Extended Weyl type theorems and perturbations. Zbl 1278.47022Berkani, M.; Zariouh, H. 5 2010 Perturbation results for Weyl type theorems. Zbl 1261.47022Berkani, M.; Zariouh, H. 5 2011 Topological uniform descent, quasi-Fredholmness and operators originated from semi-B-Fredholm theory. Zbl 1494.47018Živković-Zlatanović, Snežana Č.; Berkani, Mohammed 4 2019 A trace formula for the index of B-Fredholm operators. Zbl 07091649Berkani, Mohammed 3 2018 Generalized Weyl’s theorem and quasi-affinity. Zbl 1192.47004Aiena, Pietro; Berkani, Mohammed 3 2010 New Weyl-type theorems. I. Zbl 1502.47016Berkani, M.; Kachad, M. 3 2012 Distance between powers of a bounded approximate identity. (Distance entre puissances d’une unité approchée bornée.) Zbl 1050.46034Berkani, M.; Esterle, J.; Mokhtari, A. 3 2003 Variations on a-Browder-type theorems. Zbl 06315237Berkani, M.; Kachad, M.; Zariouh, H.; Zguitti, H. 2 2013 Generalized a-Weyl’s theorem and perturbations. Zbl 1258.47021Berkani, M.; Zariouh, H. 2 2010 Extended Weyl-type theorems for direct sums. Zbl 1318.47019Berkani, M.; Kachad, M.; Zariouh, H. 1 2014 A new approach in index theory. Zbl 07373902Berkani, M. 1 2021 Extensions of certain inequalities in Banach algebras. (Extension de certaines inégalités dans les algèbres de Banach.) Zbl 0899.46027Berkani, M.; Sarih, M. 1 1998 Inégalités dans les algèbres de Banach. (Inequalities in Banach algebras). Zbl 0725.46028Berkani, M. 1 1990 \(B\)-Fredholm and spectral properties for multipliers in Banach algebras. Zbl 1123.47031Berkani, M.; Arroud, A. 1 2006 A new approach in index theory. Zbl 07373902Berkani, M. 1 2021 Topological uniform descent, quasi-Fredholmness and operators originated from semi-B-Fredholm theory. Zbl 1494.47018Živković-Zlatanović, Snežana Č.; Berkani, Mohammed 4 2019 B-Fredholm elements in rings and algebras. Zbl 1399.47050Berkani, Mohammed 6 2018 A trace formula for the index of B-Fredholm operators. Zbl 07091649Berkani, Mohammed 3 2018 B-Fredholm properties of closed invertible operators. Zbl 1427.47003Berkani, M.; Moalla, N. 6 2016 B-Fredholm spectra and Riesz perturbations. Zbl 1464.47009Berkani, M.; Zariouh, H. 7 2015 New Browder and Weyl type theorems. Zbl 1325.47028Berkani, Mohammed; Kachad, Mohammed 6 2015 Extended Weyl-type theorems for direct sums. Zbl 1318.47019Berkani, M.; Kachad, M.; Zariouh, H. 1 2014 On the B-Fredholm alternative. Zbl 1365.47002Berkani, Mohammed 7 2013 Variations on a-Browder-type theorems. Zbl 06315237Berkani, M.; Kachad, M.; Zariouh, H.; Zguitti, H. 2 2013 Weyl type-theorems for direct sums. Zbl 1263.47016Berkani, Mohammed; Zariouh, Hassan 7 2012 New Weyl-type theorems. I. Zbl 1502.47016Berkani, M.; Kachad, M. 3 2012 Browder-type theorems and SVEP. Zbl 1241.47008Berkani, Mohammed; Sarih, Mustapha; Zariouh, Hassan 11 2011 Perturbation results for Weyl type theorems. Zbl 1261.47022Berkani, M.; Zariouh, H. 5 2011 New extended Weyl type theorems. Zbl 1258.47020Berkani, M.; Zariouh, H. 17 2010 Extended Weyl type theorems and perturbations. Zbl 1278.47022Berkani, M.; Zariouh, H. 5 2010 Generalized Weyl’s theorem and quasi-affinity. Zbl 1192.47004Aiena, Pietro; Berkani, Mohammed 3 2010 Generalized a-Weyl’s theorem and perturbations. Zbl 1258.47021Berkani, M.; Zariouh, H. 2 2010 Extended Weyl type theorems. Zbl 1211.47011Berkani, M.; Zariouh, H. 24 2009 On the property \((gw)\). Zbl 1188.47011Amouch, Mohammed; Berkani, Mohammed 23 2008 Unbounded b-Fredholm operators on Hilbert spaces. Zbl 1160.47008Berkani, M.; Castro-González, N. 7 2008 Preservation of property \((gw)\) under perturbations. Zbl 1199.47068Berkani, Mohammed; Amouch, Mohamed 6 2008 On the equivalence of Weyl theorem and generalized Weyl theorem. Zbl 1116.47015Berkani, M. 14 2007 Single valued extension property and generalized Weyl’s theorem. Zbl 1114.47015Berkani, M.; Castro, N.; Djordjević, S. V. 10 2006 \(B\)-Fredholm and spectral properties for multipliers in Banach algebras. Zbl 1123.47031Berkani, M.; Arroud, A. 1 2006 Generalized Weyl’s theorem and hyponormal operators. Zbl 1061.47021Berkani, M.; Arroud, A. 24 2004 A note on the index of \(B\)-Fredholm operators. Zbl 1056.47011Berkani, M.; Medková, D. 5 2004 Weyl type theorems for bounded linear operators. Zbl 1050.47014Berkani, M.; Koliha, J. J. 70 2003 Distance between powers of a bounded approximate identity. (Distance entre puissances d’une unité approchée bornée.) Zbl 1050.46034Berkani, M.; Esterle, J.; Mokhtari, A. 3 2003 Index of B-Fredholm operators and generalization of a Weyl theorem. Zbl 0996.47015Berkani, M. 68 2002 B-Weyl spectrum and poles of the resolvent. Zbl 1043.47004Berkani, M. 35 2002 On semi B-Fredholm operators. Zbl 0995.47008Berkani, M.; Sarih, M. 74 2001 An Atkinson-type theorem for B-Fredholm operators. Zbl 1005.47012Berkani, M.; Sarih, M. 23 2001 Restriction of an operator to the range of its powers. Zbl 0978.47011Berkani, M. 38 2000 Inversion of the local Pompéiu transform in quaternion hyperbolic space – the case of two balls. (Inversion de la transformation de Pompéiu locale dans l’espace hyperbolique quaternionique – cas des deux boules.) Zbl 1037.43013Berkani, Mohammed; el Harchaoui, Mimoun; Gay, Roger 9 2000 On a class of quasi-Fredholm operators. Zbl 0939.47010Berkani, M. 80 1999 Extensions of certain inequalities in Banach algebras. (Extension de certaines inégalités dans les algèbres de Banach.) Zbl 0899.46027Berkani, M.; Sarih, M. 1 1998 Spectral application theorem for essential quasi-Fredholm spectra. (Théorème de l’application spectrale pour le spectre essentiel quasi-Fredholm.) Zbl 0870.47003Berkani, M.; Ouahab, A. 6 1997 Inégalités dans les algèbres de Banach. (Inequalities in Banach algebras). Zbl 0725.46028Berkani, M. 1 1990 all cited Publications top 5 cited Publications all top 5 Cited by 126 Authors 18 Aiena, Pietro 15 Berkani, Mohammed 13 Rashid, Mohammad Hussein Mohammad 13 Zariouh, Hassan 12 Zeng, Qingping 12 Zhong, Huaijie 11 Amouch, Mohamed 11 Carpintero, Carlos R. 11 Sanabria, Jose Eduardo 9 Volchkov, Vitaliĭ Vladimirovich 8 Cao, Xiaohong 8 García, Orlando J. 8 Rosas, Ennis R. 7 Boasso, Enrico 7 Zguitti, Hassane 7 Živković-Zlatanović, Snežana Č. 6 Gupta, Anuradha 6 Mecheri, Salah 6 Tajmouati, Abdelaziz 6 Volchkov, Valeriĭ Vladimirovich 5 An, Il Ju 5 Moalla, Nedra 4 Boudhief, Monia 4 Cvetković, Miloš D. 4 Duggal, Bhagwati Prashad 4 Guillen, Jesús R. 4 Han, Young Min 4 Kachad, Mohammed 4 Kumar, Ankit 4 Mnif, Maher 4 Yan, Kai 3 Aponte, Elvis 3 Aznay, Zakariae 3 Braha, Naim Latif 3 Jiang, Lining 3 Jiang, Qiaofen 3 Karmouni, Mohammed 3 Ko, Eungil 3 Kong, Yingying 3 Lee, Jieun 3 Ouahab, Abdelmalek 3 Peña, Pedro 3 Shen, Junli 3 Triolo, Salvatore 3 Wu, Zhenying 3 Yang, Lili 3 Zhang, Shifang 3 Zuo, Fei 2 Álvarez Seco, Teresa 2 Arroud, A. 2 Arroud, Abdelmajid 2 Ben Ouidren, Kaoutar 2 Berkani, Mohamed 2 Chamkha, Yosra 2 Chen, Alatancang 2 Chō, Muneo 2 Esterle, Jean 2 Ghorbel, Ayoub 2 Gil’, Michael Iosif 2 Gutierrez, Alexander J. 2 Ji, Guoxing 2 Lombarkia, Farida 2 Mamtani, Karuna 2 Ren, Yanxun 2 Volchkova, Natal’ya Petrovna 1 Abdmouleh, Faiçal 1 Abkari, Mbark 1 Alhomidi Zakariya, M. R. F. 1 Alhomidi, Zakariya M. R. F. 1 Bai, Wurichaihu 1 Balzan, Edixon 1 Ben Ali, Anouer 1 Benharrat, Mohammed 1 Biondi, Maria Teresa 1 Boumazgour, Mohamed 1 Bu, Qinggang 1 Causil, Dairo 1 Curto, Raúl Enrique 1 Dabhi, Prakash A. 1 Dharmarha, Preeti 1 Djordjević, Slaviša V. 1 Doust, Ian 1 Ferrer, Osmin 1 González Ortiz, Manuel 1 Hadji, Soufiane 1 Hafsa, Bouaniza 1 Hoxha, Ilmi 1 Ivković, Stefan 1 Jacob, Birgit 1 Jeon, In Ho 1 Kumari, Sarita 1 Lakhal, T. Ben 1 Lancien, Gilles 1 Lee, Mee-Jung 1 Lin, Liqiong 1 Liu, Aifang 1 Macías, Jhixon 1 Maheswari Naik, P. 1 Malaver, A. 1 Messirdi, Bekkai ...and 26 more Authors all top 5 Cited in 72 Serials 18 Mediterranean Journal of Mathematics 17 Journal of Mathematical Analysis and Applications 17 Filomat 14 Rendiconti del Circolo Matemàtico di Palermo. Serie II 10 Linear and Multilinear Algebra 9 Complex Analysis and Operator Theory 6 Linear Algebra and its Applications 6 Functional Analysis, Approximation and Computation 5 Ukrainian Mathematical Journal 5 Acta Mathematica Sinica. English Series 4 Banach Journal of Mathematical Analysis 3 Acta Mathematica Vietnamica 3 Proceedings of the American Mathematical Society 3 Turkish Journal of Mathematics 3 Journal of Inequalities and Applications 3 Asian-European Journal of Mathematics 3 Annals of Functional Analysis 3 Afrika Matematika 2 Integral Equations and Operator Theory 2 Mathematische Nachrichten 2 Monatshefte für Mathematik 2 Journal of Mathematical Sciences (New York) 2 Journal of the Australian Mathematical Society 2 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 2 Proyecciones 2 Operators and Matrices 2 Revista de la Real Academia de Ciencias Exactas, Físicas y Naturales. Serie A: Matemáticas. RACSAM 2 Open Mathematics 1 Analysis Mathematica 1 Applicable Analysis 1 Bulletin of the Australian Mathematical Society 1 Indian Journal of Pure & Applied Mathematics 1 Journal d’Analyse Mathématique 1 Periodica Mathematica Hungarica 1 Studia Mathematica 1 Arkiv för Matematik 1 Acta Scientiarum Mathematicarum 1 Demonstratio Mathematica 1 Functional Analysis and its Applications 1 Journal of Functional Analysis 1 Kyungpook Mathematical Journal 1 Matematički Vesnik 1 Mathematische Zeitschrift 1 Proceedings of the Edinburgh Mathematical Society. Series II 1 Tokyo Journal of Mathematics 1 Bulletin of the Korean Mathematical Society 1 Acta Mathematica Hungarica 1 Bulletin of the Iranian Mathematical Society 1 Extracta Mathematicae 1 Mathematica Bohemica 1 Journal of Contemporary Mathematical Analysis. Armenian Academy of Sciences 1 Aequationes Mathematicae 1 Glasnik Matematički. Serija III 1 Analele Științifice ale Universității Al. I. Cuza din Iași. Serie Nouă. Matematică 1 Russian Mathematics 1 The Journal of Analysis 1 Boletín de la Sociedad Matemática Mexicana. Third Series 1 Izvestiya: Mathematics 1 Doklady Mathematics 1 Abstract and Applied Analysis 1 Mathematical Inequalities & Applications 1 Communications of the Korean Mathematical Society 1 Communications in Contemporary Mathematics 1 Kragujevac Journal of Mathematics 1 Applied Mathematics E-Notes 1 Boletim da Sociedade Paranaense de Matemática. Terceira Série 1 Arabian Journal of Mathematics 1 Vestnik Udmurtskogo Universiteta. Matematika. Mekhanika. Komp’yuternye Nauki 1 Problemy Analiza. Issues of Analysis 1 Journal of Mathematics 1 Moroccan Journal of Pure and Applied Analysis 1 Chelyabinskiĭ Fiziko-Matematicheskiĭ Zhurnal all top 5 Cited in 15 Fields 184 Operator theory (47-XX) 16 Functional analysis (46-XX) 7 Abstract harmonic analysis (43-XX) 6 Associative rings and algebras (16-XX) 4 Differential geometry (53-XX) 3 Real functions (26-XX) 2 Linear and multilinear algebra; matrix theory (15-XX) 2 Special functions (33-XX) 2 Harmonic analysis on Euclidean spaces (42-XX) 2 Global analysis, analysis on manifolds (58-XX) 1 \(K\)-theory (19-XX) 1 Group theory and generalizations (20-XX) 1 Partial differential equations (35-XX) 1 Approximations and expansions (41-XX) 1 Integral equations (45-XX) Citations by Year