Edit Profile (opens in new tab) Youssef, Nabil Labib Co-Author Distance Author ID: youssef.nabil-labib Published as: Youssef, Nabil L.; Youssef, Nabil Labib; Youssef, N. L. more...less Documents Indexed: 55 Publications since 1980, including 4 Additional arXiv Preprints Reviewing Activity: 243 Reviews Co-Authors: 9 Co-Authors with 40 Joint Publications 28 Co-Co-Authors all top 5 Co-Authors 13 single-authored 16 Soleiman, Amr 11 Elgendi, Salah Gomaa 10 Abed, Sayed Hassan 7 Sid-Ahmed, Amr M. 5 Taha, Ebtsam H. 5 Wanas, M. I. 3 Tamim, Aly A. 2 El Hanafy, W. 1 Elsayed, Waleed A. all top 5 Serials 9 Tensor. New Series 8 International Journal of Geometric Methods in Modern Physics 4 Balkan Journal of Geometry and its Applications (BJGA) 2 Computer Physics Communications 2 Reports on Mathematical Physics 2 Revue Roumaine de Mathématiques Pures et Appliquées 2 Analele Universității din Timișoara. Științe Matematice 2 Fuzzy Sets and Systems 2 Rendiconti del Circolo Matemàtico di Palermo. Serie II 2 Differential Geometry and its Applications 2 Algebras, Groups and Geometries 2 Journal of the Egyptian Mathematical Society 1 Classical and Quantum Gravity 1 Indian Journal of Pure & Applied Mathematics 1 Hadronic Journal 1 Journal of Mathematics of Kyoto University 1 Publicationes Mathematicae Debrecen 1 Journal of Institute of Mathematics and Computer Sciences. Mathematics Series 1 Gravitation & Cosmology 1 Comptes Rendus. Mathématique. Académie des Sciences, Paris 1 Journal of Dynamical Systems and Geometric Theories 1 Comptes Rendus Hebdomadaires des Séances de l’Académie des Sciences, Série A 1 Advances in Mathematical Physics 1 Journal of Finsler Geometry and its Applications all top 5 Fields 50 Differential geometry (53-XX) 10 Global analysis, analysis on manifolds (58-XX) 5 Relativity and gravitational theory (83-XX) 3 Mathematical logic and foundations (03-XX) 3 General algebraic systems (08-XX) 3 Geometry (51-XX) 2 Group theory and generalizations (20-XX) 1 Associative rings and algebras (16-XX) 1 Manifolds and cell complexes (57-XX) 1 Quantum theory (81-XX) Publications by Year all cited Publications top 5 cited Publications Citations contained in zbMATH Open 35 Publications have been cited 174 times in 85 Documents Cited by ▼ Year ▼ Linear connections and curvature tensors in the geometry of parallelizable manifolds. Zbl 1147.53021 Youssef, Nabil L.; Sid-Ahmed, Amr M. 22 2007 Teleparallel Lagrange geometry and a unified field theory. Zbl 1186.83134 Wanas, M. I.; Youssef, Nabil L.; Sid-Ahmed, A. M. 15 2010 A global approach to the theory of special Finsler manifolds. Zbl 1170.53057 Youssef, Nabil Labib; Abed, Sayed Hassan; Soleiman, Amr 13 2008 Geometric objects associated with the fundamental connections in Finsler geometry. Zbl 1228.53028 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 12 2010 Cartan and Berwald connections in the pullback formalism. Zbl 1180.53075 Youssef, N. L.; Abed, S. H.; Soleiman, A. 12 2008 Fuzzy Cartesian product, fuzzy relations and fuzzy functions. Zbl 0731.04005 Dib, K. A.; Youssef, Nabil L. 11 1991 A global approach to the theory of connections in Finsler geometry. Zbl 1229.53076 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 10 2009 New Finsler package. Zbl 1360.53006 Youssef, Nabil L.; Elgendi, S. G. 7 2014 On horizontal recurrent Finsler connections. Zbl 1419.53029 Youssef, Nabil L.; Soleiman, A. 6 2019 A global approach to absolute parallelism geometry. Zbl 1287.53019 Youssef, Nabil L.; Elsayed, Waleed A. 6 2013 Extended absolute parallelism geometry. Zbl 1156.53015 Youssef, Nabil L.; Sid-Ahmed, A. M. 6 2008 On concircularly recurrent Finsler manifolds. Zbl 1284.53027 Youssef, Nabil L.; Soleiman, Amr 5 2013 Distribution de nullite du tenseur de courbure d’une connexion. Zbl 0433.53012 Youssef, Nabil Labib 4 1980 A new approach to fuzzy groupoids. Zbl 0786.20053 Youssef, Nabil L.; Dib, K. A. 4 1992 Sur les tenseurs de courbure de la connexion de Berwald et ses distributions de nullite. Zbl 0497.53041 Youssef, Nabil Labib 4 1982 Semi-projective changes. Zbl 0822.53038 Youssef, Nabil L. 3 1994 Connexions métriques semi-symétriques semi-basiques. Zbl 0538.53065 Youssef, Nabil Labib 3 1983 Vertical semi-symmetric metric connections. Zbl 0738.53007 Youssef, Nabil Labib 3 1990 Generalized \(\beta\)-conformal change and special Finsler spaces. Zbl 1263.53020 Youssef, Nabil L.; Abed, S. H.; Elgendi, S. G. 3 2012 Concurrent \(\pi \)-vector fields and energy \(\beta \)-change. Zbl 1184.53077 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 3 2009 Einstein geometrization philosophy and differential identities in PAP-geometry. Zbl 1357.83013 Wanas, M. I.; Youssef, Nabil L.; El Hanafy, W.; Osman, S. N. 3 2016 Generalized \(\beta \)-conformal change of Finsler metrics. Zbl 1202.53031 Youssef, Nabil L.; Abed, S. H.; Elgendi, S. G. 3 2010 A pure geometric theory of gravity and a material distribution. Zbl 1380.83232 Wanas, M. I.; Youssef, Nabil L.; El Hanafy, W. 2 2017 Semi-concurrent vector fields in Finsler geometry. Zbl 1435.53054 Youssef, Nabil L.; Elgendi, S. G.; Taha, Ebtsam H. 2 2019 A global theory of conformal Finsler geometry. Zbl 1193.53166 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 2 2008 Computing nullity and kernel vectors using NF-package: counterexamples. Zbl 1348.53003 Youssef, Nabil L.; Elgendi, S. G. 1 2014 On generalised Randers manifolds. Zbl 1006.53065 Tamim, Aly A.; Youssef, Nabil L. 1 1999 Nullity distributions associated with Chern connection. Zbl 1389.53104 Youssef, Nabil L.; Elgendi, Salah G. 1 2016 Nullity distributions associated to Cartan connection. Zbl 1320.53094 Youssef, Nabil L.; Soleiman, A.; Elgendi, S. G. 1 2014 Intrinsic theory of projective changes in Finsler geometry. Zbl 1231.53063 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 1 2011 Some types of recurrence in Finsley geometry. Zbl 1380.53031 Soleiman, Amr; Youssef, Nabil L. 1 2017 Conformal change of special Finsler spaces. Zbl 1235.53079 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 1 2010 Teleparallel Lagrange geometry and a unified field theory: linearization of the field equations. Zbl 1264.53032 Wanas, M. I.; Youssef, Nabil L.; Sid-Ahmed, A. M. 1 2013 Characterization of Finsler spaces of scalar curvature. Zbl 1511.53070 Youssef, Nabil L.; Soleiman, A. 1 2020 A note on L. Zhou’s result on Finsler surfaces with \(K=0\) and \(J=0\). Zbl 1477.53033 Elgendi, S. G.; Youssef, Nabil L. 1 2021 A note on L. Zhou’s result on Finsler surfaces with \(K=0\) and \(J=0\). Zbl 1477.53033 Elgendi, S. G.; Youssef, Nabil L. 1 2021 Characterization of Finsler spaces of scalar curvature. Zbl 1511.53070 Youssef, Nabil L.; Soleiman, A. 1 2020 On horizontal recurrent Finsler connections. Zbl 1419.53029 Youssef, Nabil L.; Soleiman, A. 6 2019 Semi-concurrent vector fields in Finsler geometry. Zbl 1435.53054 Youssef, Nabil L.; Elgendi, S. G.; Taha, Ebtsam H. 2 2019 A pure geometric theory of gravity and a material distribution. Zbl 1380.83232 Wanas, M. I.; Youssef, Nabil L.; El Hanafy, W. 2 2017 Some types of recurrence in Finsley geometry. Zbl 1380.53031 Soleiman, Amr; Youssef, Nabil L. 1 2017 Einstein geometrization philosophy and differential identities in PAP-geometry. Zbl 1357.83013 Wanas, M. I.; Youssef, Nabil L.; El Hanafy, W.; Osman, S. N. 3 2016 Nullity distributions associated with Chern connection. Zbl 1389.53104 Youssef, Nabil L.; Elgendi, Salah G. 1 2016 New Finsler package. Zbl 1360.53006 Youssef, Nabil L.; Elgendi, S. G. 7 2014 Computing nullity and kernel vectors using NF-package: counterexamples. Zbl 1348.53003 Youssef, Nabil L.; Elgendi, S. G. 1 2014 Nullity distributions associated to Cartan connection. Zbl 1320.53094 Youssef, Nabil L.; Soleiman, A.; Elgendi, S. G. 1 2014 A global approach to absolute parallelism geometry. Zbl 1287.53019 Youssef, Nabil L.; Elsayed, Waleed A. 6 2013 On concircularly recurrent Finsler manifolds. Zbl 1284.53027 Youssef, Nabil L.; Soleiman, Amr 5 2013 Teleparallel Lagrange geometry and a unified field theory: linearization of the field equations. Zbl 1264.53032 Wanas, M. I.; Youssef, Nabil L.; Sid-Ahmed, A. M. 1 2013 Generalized \(\beta\)-conformal change and special Finsler spaces. Zbl 1263.53020 Youssef, Nabil L.; Abed, S. H.; Elgendi, S. G. 3 2012 Intrinsic theory of projective changes in Finsler geometry. Zbl 1231.53063 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 1 2011 Teleparallel Lagrange geometry and a unified field theory. Zbl 1186.83134 Wanas, M. I.; Youssef, Nabil L.; Sid-Ahmed, A. M. 15 2010 Geometric objects associated with the fundamental connections in Finsler geometry. Zbl 1228.53028 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 12 2010 Generalized \(\beta \)-conformal change of Finsler metrics. Zbl 1202.53031 Youssef, Nabil L.; Abed, S. H.; Elgendi, S. G. 3 2010 Conformal change of special Finsler spaces. Zbl 1235.53079 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 1 2010 A global approach to the theory of connections in Finsler geometry. Zbl 1229.53076 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 10 2009 Concurrent \(\pi \)-vector fields and energy \(\beta \)-change. Zbl 1184.53077 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 3 2009 A global approach to the theory of special Finsler manifolds. Zbl 1170.53057 Youssef, Nabil Labib; Abed, Sayed Hassan; Soleiman, Amr 13 2008 Cartan and Berwald connections in the pullback formalism. Zbl 1180.53075 Youssef, N. L.; Abed, S. H.; Soleiman, A. 12 2008 Extended absolute parallelism geometry. Zbl 1156.53015 Youssef, Nabil L.; Sid-Ahmed, A. M. 6 2008 A global theory of conformal Finsler geometry. Zbl 1193.53166 Youssef, Nabil L.; Abed, S. H.; Soleiman, A. 2 2008 Linear connections and curvature tensors in the geometry of parallelizable manifolds. Zbl 1147.53021 Youssef, Nabil L.; Sid-Ahmed, Amr M. 22 2007 On generalised Randers manifolds. Zbl 1006.53065 Tamim, Aly A.; Youssef, Nabil L. 1 1999 Semi-projective changes. Zbl 0822.53038 Youssef, Nabil L. 3 1994 A new approach to fuzzy groupoids. Zbl 0786.20053 Youssef, Nabil L.; Dib, K. A. 4 1992 Fuzzy Cartesian product, fuzzy relations and fuzzy functions. Zbl 0731.04005 Dib, K. A.; Youssef, Nabil L. 11 1991 Vertical semi-symmetric metric connections. Zbl 0738.53007 Youssef, Nabil Labib 3 1990 Connexions métriques semi-symétriques semi-basiques. Zbl 0538.53065 Youssef, Nabil Labib 3 1983 Sur les tenseurs de courbure de la connexion de Berwald et ses distributions de nullite. Zbl 0497.53041 Youssef, Nabil Labib 4 1982 Distribution de nullite du tenseur de courbure d’une connexion. Zbl 0433.53012 Youssef, Nabil Labib 4 1980 all cited Publications top 5 cited Publications all top 5 Cited by 70 Authors 19 Youssef, Nabil Labib 15 Elgendi, Salah Gomaa 15 Soleiman, Amr 10 Wanas, M. I. 9 Nashed, Gamal G. L. 4 Sid-Ahmed, Amr M. 4 Taha, Ebtsam H. 3 Kamal, Mona M. 3 Kozma, László 3 Yavari, Arash 2 Abed, Sayed Hassan 2 Bucataru, Joan 2 Constantinescu, Oana 2 Creţu, Georgeta 2 El Hanafy, W. 2 Najafi, Behzad 2 Voicu, Nicoleta 1 Abbas, Sameer Annon 1 Abdelhamid, N. E. 1 Abdelsalam, A. M. 1 Abdelsalam, Sarah S. 1 Al-Husban, Abdallah 1 Al Jaraden, Jehad 1 Alqaraleh, Sahar M. 1 Alsarahead, Mikhled Okleh 1 Ambale Rajegowda, Kavyashree 1 Ammar, Samah. A. 1 Atashafrouz, Mona 1 Bidabad, Behroz 1 Capozziello, Salvatore 1 De, Uday Chand 1 El-Ahmady, A. E. 1 Elsayed, Waleed A. 1 Galhum, N. E. 1 Grégoire, Ravelonirina H. Sammy 1 Hameed, Fatima 1 Hassan, A. A. M. 1 Josefsson, Martin 1 Jun, Young Bai 1 Kamelaei, Farzaneh 1 Kampalappa, Narasimhamurthy Senajji 1 Khalil, Shuker Mahmood 1 Kim, Hee Sik 1 Koifman, K. G. 1 Komalobiah Rajanna, Thippeswamy 1 Lychev, Sergei A. 1 Maleki, Maryam 1 Matłoka, Marian 1 Minčić, Svetislav M. 1 Nabil Osman, S. 1 Neggers, Joseph 1 Ozakin, Arkadas 1 Raei, Zohre 1 Rajabi, Tahere 1 Sadeghzadeh, Nasrin 1 Shavakh, M. H. 1 Shenawy, Sameh 1 Sherif, Abbas Mohamed 1 Shimoda, Mamoru 1 Sidky, F. I. 1 Sozio, Fabio 1 Stanislas, Herinantenaina R. 1 Talafha, Adeeb G. 1 Tayebi, Akbar 1 Tiwari, Bankteshwar 1 Ünal, Bülent 1 Weng, Zi-Hua 1 Xin, Xiaolong 1 Yallappa Kumbar, Mallikarjun 1 Zulqarnain, Rana Muhammad all top 5 Cited in 41 Serials 15 International Journal of Geometric Methods in Modern Physics 6 Fuzzy Sets and Systems 4 International Journal of Theoretical Physics 4 Advances in High Energy Physics 4 Journal of Finsler Geometry and its Applications 3 Modern Physics Letters A 3 Journal of Geometry and Physics 3 Bulletin of the Iranian Mathematical Society 3 Differential Geometry and its Applications 3 Gravitation & Cosmology 2 General Relativity and Gravitation 2 Reports on Mathematical Physics 2 Information Sciences 2 Rendiconti del Circolo Matemàtico di Palermo. Serie II 2 Journal of the Egyptian Mathematical Society 2 Soft Computing 1 Bulletin of the Australian Mathematical Society 1 Computer Physics Communications 1 Indian Journal of Pure & Applied Mathematics 1 Journal of Mathematical Physics 1 The Mathematical Gazette 1 Journal of the Korean Mathematical Society 1 Annals of Global Analysis and Geometry 1 The Journal of Geometric Analysis 1 Journal of Nonlinear Science 1 Russian Mathematics 1 Balkan Journal of Geometry and its Applications (BJGA) 1 Mathematics and Mechanics of Solids 1 Journal of Discrete Mathematical Sciences & Cryptography 1 Communications of the Korean Mathematical Society 1 DGDS. Differential Geometry – Dynamical Systems 1 Journal of Nonlinear Mathematical Physics 1 Bulletin of the Malaysian Mathematical Sciences Society. Second Series 1 Comptes Rendus. Mathématique. Académie des Sciences, Paris 1 Journal of Dynamical Systems and Geometric Theories 1 Hacettepe Journal of Mathematics and Statistics 1 Advances in Mathematical Physics 1 Advances in Fuzzy Systems 1 Dal’nevostochnyĭ Matematicheskiĭ Zhurnal 1 Palestine Journal of Mathematics 1 Journal of Mathematics all top 5 Cited in 22 Fields 58 Differential geometry (53-XX) 20 Relativity and gravitational theory (83-XX) 9 Global analysis, analysis on manifolds (58-XX) 7 Mathematical logic and foundations (03-XX) 6 Group theory and generalizations (20-XX) 4 General algebraic systems (08-XX) 4 Geometry (51-XX) 4 Mechanics of deformable solids (74-XX) 3 Mechanics of particles and systems (70-XX) 2 Order, lattices, ordered algebraic structures (06-XX) 2 Partial differential equations (35-XX) 2 Quantum theory (81-XX) 2 Astronomy and astrophysics (85-XX) 1 Number theory (11-XX) 1 Nonassociative rings and algebras (17-XX) 1 Special functions (33-XX) 1 Ordinary differential equations (34-XX) 1 General topology (54-XX) 1 Manifolds and cell complexes (57-XX) 1 Computer science (68-XX) 1 Classical thermodynamics, heat transfer (80-XX) 1 Game theory, economics, finance, and other social and behavioral sciences (91-XX) Citations by Year