Citation Rankings
Highly Cited Researchers
South Africa Highly Cited Researchers CitationNatural Sciences / Mathematical Sciences in South Africa Rankings 2025
Citation Rankings (Highly Cited Researchers) and the list of the most cited and influential researchers cover a wide range of scientific fields, spanning 197 main and sub-disciplines, as well as the Art and Humanities Citation Rankings and Social Sciences and Humanities Citation Rankings, offering a unique service. Additionally, the list without CERN, Statistical Data, etc., provided exclusively by “AD Scientific Index”, is part of our effort to balance the situation created by CERN and researchers with statistical data, who have an advantage over others, especially those in the social and humanities fields. There should be new regulations for multi-author and CERN papers. Citation lists also reveal many rule violations and unethical practices. See also for more specific citation analyses: 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
Relativity
cosmology
complexity
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,956
12,551
0.256
* Total Citation Counts Rankings
Ranking Based On Selection :2
Fluid Mechanics
Thermal Science
Applied Mathematics
Modelling and Computations
BioMathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,677
17,360
0.627
* Total Citation Counts Rankings
Ranking Based On Selection :3
Gravitational Waves
Black Holes
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,925
14,693
0.641
* Total Citation Counts Rankings
Ranking Based On Selection :4
Graph Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,985
8,990
0.428
* Total Citation Counts Rankings
Ranking Based On Selection :5
statistical ecology
biodiversity informatics
citizen science
moult
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,164
4,598
0.268
* Total Citation Counts Rankings
Ranking Based On Selection :6
Mathematical Ecology
Ecological Networks
Spatial Ecology
Biodiversity Informatics
Evolutionary Dynamics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,826
8,986
0.650
* Total Citation Counts Rankings
Ranking Based On Selection :7
Fractional Differential equations
Lie Symmetry
Bio-Mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,889
7,105
0.598
* Total Citation Counts Rankings
Ranking Based On Selection :8
Mathematics
Mathematical Physics
Mathematical Sciences
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,137
4,146
0.454
* Total Citation Counts Rankings
Ranking Based On Selection :9
Mathematics
Number Theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,707
4,227
0.485
* Total Citation Counts Rankings
Ranking Based On Selection :10
Mathematics Education
Teacher Education
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,575
2,618
0.346
* Total Citation Counts Rankings
Ranking Based On Selection :11
Differential Equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,181
4,803
0.669
* Total Citation Counts Rankings
Ranking Based On Selection :12
Algebraic and geometric methods of differential equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,665
1,915
0.287
* Total Citation Counts Rankings
Ranking Based On Selection :13
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,621
1,396
0.211
* Total Citation Counts Rankings
Ranking Based On Selection :14
Swarm Intelligence
Evolutionary Computation
Machine Learning
Computer Vision
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,280
6,156
0.980
* Total Citation Counts Rankings
Ranking Based On Selection :15
Discrete mathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,198
1,328
0.214
* Total Citation Counts Rankings
Ranking Based On Selection :16
Differential equations
symmetries
conservation laws
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,151
3,224
0.524
* Total Citation Counts Rankings
Ranking Based On Selection :17
Mathematical cognition in childhood
Conceptual development in childhood
Early Reading as Learning in Science and Maths
Quali
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,099
1,749
0.287
* Total Citation Counts Rankings
Ranking Based On Selection :18
Reliability theory-stochastic modeling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,800
3,248
0.560
* Total Citation Counts Rankings
Ranking Based On Selection :19
Mathematical Physics
Theoretical Physics
Nonlinear Dynamics
Scientific Computing
Computer
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,497
975
0.177
* Total Citation Counts Rankings
Ranking Based On Selection :20
primary
elementary
mathematics teaching and learning
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,235
1,556
0.297
* Total Citation Counts Rankings
Ranking Based On Selection :21
Numerical Analysis
Scientific Computing
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,976
1,781
0.358
* Total Citation Counts Rankings
Ranking Based On Selection :22
Nonlinear Dynamics
Dynamical Systems
Chaos
Hamiltonian Systems
Symplectic Integrators
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,870
1,812
0.372
* Total Citation Counts Rankings
Ranking Based On Selection :23
Functional analysis
applicable analysis
nonlinear optimization
fixed point theory and applications
variational inequalities
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,188
3,997
0.954
* Total Citation Counts Rankings
Ranking Based On Selection :24
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,104
1,698
0.414
* Total Citation Counts Rankings
Ranking Based On Selection :25
mathematical modelling
renewable resources assessment
fisheries management
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,806
2,803
0.736
* Total Citation Counts Rankings
Rankings
9,976
27
12
Ranking Based On Selection: 1
George FR Ellis
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
48,956
12,551
0.256
Relativity
cosmology
complexity
* Total Citation Counts Rankings
Rankings
24,548
69
7
Ranking Based On Selection: 2
OD Makinde
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
27,677
17,360
0.627
Fluid Mechanics
Thermal Science
Applied Mathematics
Modelling and Computations
BioMathematics
* Total Citation Counts Rankings
Rankings
32,460
100
3
Ranking Based On Selection: 3
Denis Pollney
Rhodes University
Grahamstown, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
22,925
14,693
0.641
Gravitational Waves
Black Holes
* Total Citation Counts Rankings
Rankings
36,743
109
7
Ranking Based On Selection: 4
Michael A. Henning
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
20,985
8,990
0.428
* Total Citation Counts Rankings
Rankings
48,446
154
32
Ranking Based On Selection: 5
Leslie Gordon Underhill
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
17,164
4,598
0.268
statistical ecology
biodiversity informatics
citizen science
moult
* Total Citation Counts Rankings
Rankings
64,480
220
34
Ranking Based On Selection: 6
Cang Hui
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
13,826
8,986
0.650
Mathematical Ecology
Ecological Networks
Spatial Ecology
Biodiversity Informatics
Evolutionary Dynamics
* Total Citation Counts Rankings
Rankings
77,941
260
5
Ranking Based On Selection: 7
Hossein Jafari
University of South Africa
Pretoria, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
11,889
7,105
0.598
Fractional Differential equations
Lie Symmetry
Bio-Mathematics
* Total Citation Counts Rankings
Rankings
106,146
376
4
Ranking Based On Selection: 8
S Moyo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
9,137
4,146
0.454
Mathematics
Mathematical Physics
Mathematical Sciences
* Total Citation Counts Rankings
Rankings
112,055
410
54
Ranking Based On Selection: 9
Florian Luca
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,707
4,227
0.485
* Total Citation Counts Rankings
Rankings
130,946
503
70
Ranking Based On Selection: 10
Jill Adler
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,575
2,618
0.346
Mathematics Education
Teacher Education
* Total Citation Counts Rankings
Rankings
138,583
540
20
Ranking Based On Selection: 11
Masood Khalique
North West University
Potchefstroom, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
7,181
4,803
0.669
* Total Citation Counts Rankings
Rankings
149,944
589
75
Ranking Based On Selection: 12
Fazal Mahomed
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,665
1,915
0.287
Algebraic and geometric methods of differential equations
* Total Citation Counts Rankings
Rankings
150,961
595
18
Ranking Based On Selection: 13
Chris Koen
University of the Western Cape
Bellville, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,621
1,396
0.211
* Total Citation Counts Rankings
Rankings
159,388
626
53
Ranking Based On Selection: 14
Absalom Ezugwu|AE Ezugwu, AES Ezugwu
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,280
6,156
0.980
Swarm Intelligence
Evolutionary Computation
Machine Learning
Computer Vision
* Total Citation Counts Rankings
Rankings
161,541
633
90
Ranking Based On Selection: 15
Helmut Prodinger
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,198
1,328
0.214
* Total Citation Counts Rankings
Rankings
162,804
639
80
Ranking Based On Selection: 16
Abdul Hamid Kara
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,151
3,224
0.524
Differential equations
symmetries
conservation laws
* Total Citation Counts Rankings
Rankings
164,165
646
29
Ranking Based On Selection: 17
Elizabeth Henning
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
6,099
1,749
0.287
Mathematical cognition in childhood
Conceptual development in childhood
Early Reading as Learning in Science and Maths
Quali
* Total Citation Counts Rankings
Rankings
172,654
692
16
Ranking Based On Selection: 18
Maxim Finkelstein
University of the Free State
Bloemfontein, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,800
3,248
0.560
Reliability theory-stochastic modeling
* Total Citation Counts Rankings
Rankings
182,070
744
35
Ranking Based On Selection: 19
Willi-Hans Steeb
University of Johannesburg
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,497
975
0.177
Mathematical Physics
Theoretical Physics
Nonlinear Dynamics
Scientific Computing
Computer
* Total Citation Counts Rankings
Rankings
190,767
783
100
Ranking Based On Selection: 20
Mike Askew
University of the Witwatersrand
Johannesburg, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
5,235
1,556
0.297
primary
elementary
mathematics teaching and learning
* Total Citation Counts Rankings
Rankings
200,470
823
109
Ranking Based On Selection: 21
Jac Weideman
Stellenbosch University
Stellenbosch, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,976
1,781
0.358
Numerical Analysis
Scientific Computing
* Total Citation Counts Rankings
Rankings
204,682
845
201
Ranking Based On Selection: 22
Charalampos (Haris) Skokos|Charalampos Skokos, Haris Skokos
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,870
1,812
0.372
Nonlinear Dynamics
Dynamical Systems
Chaos
Hamiltonian Systems
Symplectic Integrators
* Total Citation Counts Rankings
Rankings
235,717
985
80
Ranking Based On Selection: 23
Oluwatosin T. Mewomo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,188
3,997
0.954
Functional analysis
applicable analysis
nonlinear optimization
fixed point theory and applications
variational inequalities
* Total Citation Counts Rankings
Rankings
240,198
1,007
231
Ranking Based On Selection: 24
Allen Rodgers
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,104
1,698
0.414
* Total Citation Counts Rankings
Rankings
257,144
1,091
244
Ranking Based On Selection: 25
Carryn De Moor
University of Cape Town
Cape Town, South Africa
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,806
2,803
0.736
mathematical modelling
renewable resources assessment
fisheries management