Citation Rankings
Highly Cited Researchers
Natural Sciences / Mathematical Sciences Highly Cited Researchers 51 Scientists Citation Rankings - 2025
The Citation Rankings (Highly Cited Researchers) list highlight the most cited and influential researchers across a vast range of scientific fields, covering 197 main and sub-disciplines, including the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings. This service, offered exclusively by AD Scientific Index, aims to provide a balanced perspective by excluding data from CERN and other statistical sources that disproportionately favor certain researchers, particularly in the social sciences and humanities. This unique approach addresses the advantages researchers with multi-author publications and CERN involvement hold over others. Furthermore, citation rankings help uncover rule violations and unethical practices within the research community. For more detailed citation analyses, explore the Scientists Last 6 Years Citation Index, Universities Total Citations Rankings 2025, and Universities Last 6 Years Citations Rankings 2025.
* Total Citation Counts Rankings
Ranking Based On Selection: 1
Operator theory Multivalued operator Fixed point theory
Riesz basis
Gribov operator in Bargmann
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,583
1,592
0.444
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Control Theory
Differential Equations
Dynamical Systems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,407
1,759
0.731
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Differential equations
fractional calculus
control theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,477
1,323
0.896
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Mathematics
Lattice theory
functional analysis
Operator theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,456
704
0.484
* Total Citation Counts Rankings
Ranking Based On Selection: 5
probability and statistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,045
633
0.606
* Total Citation Counts Rankings
Ranking Based On Selection: 6
PDE - Differential Geometry - Nonlinear Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
772
269
0.348
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
753
293
0.389
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
719
238
0.331
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Operator Theory
Fixed Point Theory
Dynamics of Linear Operators
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
542
366
0.675
360° Institutional Performance & Benchmarking Click Here for Live Demo
Gain data-driven strategic insights into your institution’s academic performance, global positioning, and competitive strengths through advanced analysis and benchmarking
with 20 similarly ranked institutions at City, Country, Region, and Global levels.
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Harmonic analysis on homogeneous spaces
Representation theory of solvable Lie groups
Fourier analysis and uncertainty principles
Deformation of discontinuous groups and related problems
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
511
130
0.254
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Partial Differential equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
505
135
0.267
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Harmonic Analysis
Special Functions and Quantum Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
434
172
0.396
* Total Citation Counts Rankings
Ranking Based On Selection: 13
P.D.E.
Functional Analysis
Fourier Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
432
257
0.595
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Analyse institutionnelle du développement économique et social
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
355
268
0.755
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Probabilités et Statistique
Fiabilité mathématique
Data analysis
Medical statistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
351
160
0.456
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
284
181
0.637
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Analyse de Fourier
hypergroupes.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
261
43
0.165
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Mathematics: operator theory
Functional analysis.
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
205
81
0.395
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Harmonic analysis
Mathematical physics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
181
170
0.939
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Probability and Statistics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
161
154
0.957
* Total Citation Counts Rankings
Ranking Based On Selection: 21
partial differential equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
149
50
0.336
* Total Citation Counts Rankings
Ranking Based On Selection: 22
Applied Statistics Spatial Analysis Statistics in Epidemiology Advanced Statistical Modeling GIS
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
145
94
0.648
* Total Citation Counts Rankings
Ranking Based On Selection: 23
chaos theory
synchronization
fractional calculus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
139
66
0.475
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Fonctions Spéciales
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
136
51
0.375
* Total Citation Counts Rankings
Ranking Based On Selection: 25
Théorie du contrôle
stabilité en temps fini
consensus multi-systèmes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
135
75
0.556
* Total Citation Counts Rankings
Rankings
283,120
87
27
Ranking Based On Selection: 1
Aref Jeribi
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,583
1,592
0.444
Operator theory Multivalued operator Fixed point theory
Riesz basis
Gribov operator in Bargmann
* Total Citation Counts Rankings
Rankings
391,210
147
42
Ranking Based On Selection: 2
Mohamed Ali Hammami
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
2,407
1,759
0.731
Control Theory
Differential Equations
Dynamical Systems
* Total Citation Counts Rankings
Rankings
548,767
270
94
Ranking Based On Selection: 3
Abdellatif Ben Makhlouf
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,477
1,323
0.896
Differential equations
fractional calculus
control theory
* Total Citation Counts Rankings
Rankings
553,763
275
96
Ranking Based On Selection: 4
Mohamed Ali Toumi
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,456
704
0.484
Mathematics
Lattice theory
functional analysis
Operator theory
* Total Citation Counts Rankings
Rankings
671,133
377
147
Ranking Based On Selection: 5
Afif Masmoudi
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,045
633
0.606
* Total Citation Counts Rankings
Rankings
779,042
481
201
Ranking Based On Selection: 6
Hichem Chtioui
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
772
269
0.348
PDE - Differential Geometry - Nonlinear Analysis
* Total Citation Counts Rankings
Rankings
787,590
494
208
Ranking Based On Selection: 7
Maher Mnif
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
753
293
0.389
* Total Citation Counts Rankings
Rankings
803,471
513
219
Ranking Based On Selection: 8
Ihsen Yengui
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
719
238
0.331
* Total Citation Counts Rankings
Rankings
897,868
599
268
Ranking Based On Selection: 9
Bilel Krichen
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
542
366
0.675
Operator Theory
Fixed Point Theory
Dynamics of Linear Operators
* Total Citation Counts Rankings
Rankings
921,216
621
280
Ranking Based On Selection: 10
Ali Baklouti
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
511
130
0.254
Harmonic analysis on homogeneous spaces
Representation theory of solvable Lie groups
Fourier analysis and uncertainty principles
Deformation of discontinuous groups and related problems
360° Institutional Performance & Benchmarking Click Here for Live Demo
Gain data-driven strategic insights into your institution’s academic performance, global positioning, and competitive strengths through advanced analysis and benchmarking
with 20 similarly ranked institutions at City, Country, Region, and Global levels.
* Total Citation Counts Rankings
Rankings
926,027
625
281
Ranking Based On Selection: 11
Habib Maagli
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
505
135
0.267
Partial Differential equations
* Total Citation Counts Rankings
Rankings
988,112
678
311
Ranking Based On Selection: 12
Néji Bettaibi
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
434
172
0.396
Harmonic Analysis
Special Functions and Quantum Theory
* Total Citation Counts Rankings
Rankings
989,767
679
312
Ranking Based On Selection: 13
Jamel Benameur
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
432
257
0.595
P.D.E.
Functional Analysis
Fourier Analysis
* Total Citation Counts Rankings
Rankings
1,068,983
747
361
Ranking Based On Selection: 14
Nouri Chtourou
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
355
268
0.755
Analyse institutionnelle du développement économique et social
* Total Citation Counts Rankings
Rankings
1,073,904
753
365
Ranking Based On Selection: 15
Soufiane Gasmi
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
351
160
0.456
Probabilités et Statistique
Fiabilité mathématique
Data analysis
Medical statistics
* Total Citation Counts Rankings
Rankings
1,161,859
815
409
Ranking Based On Selection: 16
Bassem Ben Hamed
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
284
181
0.637
* Total Citation Counts Rankings
Rankings
1,198,521
845
426
Ranking Based On Selection: 17
Mohamed Mounir Nessibi
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
261
43
0.165
Analyse de Fourier
hypergroupes.
* Total Citation Counts Rankings
Rankings
1,302,039
937
485
Ranking Based On Selection: 18
Faiçal Abdmouleh
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
205
81
0.395
Mathematics: operator theory
Functional analysis.
* Total Citation Counts Rankings
Rankings
1,356,419
980
509
Ranking Based On Selection: 19
Sami Ghazouani
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
181
170
0.939
Harmonic analysis
Mathematical physics
* Total Citation Counts Rankings
Rankings
1,409,302
1,018
535
Ranking Based On Selection: 20
Raouf Fakhfakh
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
161
154
0.957
* Total Citation Counts Rankings
Rankings
1,445,810
1,039
545
Ranking Based On Selection: 21
Tarek Saanouni
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
149
50
0.336
partial differential equations
* Total Citation Counts Rankings
Rankings
1,457,542
1,046
551
Ranking Based On Selection: 22
Kais Ben-Ahmed
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
145
94
0.648
Applied Statistics Spatial Analysis Statistics in Epidemiology Advanced Statistical Modeling GIS
* Total Citation Counts Rankings
Rankings
1,477,010
1,055
558
Ranking Based On Selection: 23
Lassoued Abir
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
139
66
0.475
chaos theory
synchronization
fractional calculus
* Total Citation Counts Rankings
Rankings
1,487,080
1,064
564
Ranking Based On Selection: 24
Neila Ben Romdhane
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
136
51
0.375
* Total Citation Counts Rankings
Rankings
1,490,034
1,068
567
Ranking Based On Selection: 25
Rhouma Mlayeh
Université de Sfax
Sfax, Tunisia
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
135
75
0.556
Théorie du contrôle
stabilité en temps fini
consensus multi-systèmes