Citation Rankings
Highly Cited Researchers
Natural Sciences / Mathematical Sciences Highly Cited Researchers Citation Rankings 2025
The Citation Rankings (Highly Cited Researchers) 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
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,321
6,595
0.535
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Nonlinear Operator Theory
Numerical Analysis
Optimization
Mathematical Programming
Integral Equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,003
3,468
0.866
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Operator Theory
Fixed Point Theory and Applications
Operator Equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,344
571
0.171
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,187
1,142
0.962
* Total Citation Counts Rankings
Ranking Based On Selection: 5
Fuzzification of algebraic structures
Differential Equations
Numerical Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,123
1,111
0.989
* Total Citation Counts Rankings
Ranking Based On Selection: 6
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,056
88
0.083
* Total Citation Counts Rankings
Ranking Based On Selection: 7
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
986
491
0.498
* Total Citation Counts Rankings
Ranking Based On Selection: 8
Nonlinear Functional Analysis and Non linear operator theory
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
772
664
0.860
* Total Citation Counts Rankings
Ranking Based On Selection: 9
Mathematics and Measurement and Evaluation
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
664
257
0.387
* Total Citation Counts Rankings
Ranking Based On Selection: 10
Sample survey
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
424
119
0.281
* Total Citation Counts Rankings
Ranking Based On Selection: 11
Mathematics Teachers Education
Differential Equations
Counselling Therapies
Information Communication and Technology
Statist
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
375
372
0.992
* Total Citation Counts Rankings
Ranking Based On Selection: 12
Mathematics Anxiety
Mathematics Education
Metacognition
ACT
MBCT
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
355
344
0.969
* Total Citation Counts Rankings
Ranking Based On Selection: 13
Nonlinear Functional Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
300
62
0.207
* Total Citation Counts Rankings
Ranking Based On Selection: 14
Computational Mathematics
Numerical Methods
Numerical Analysis
Differential Equations
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
260
153
0.588
* Total Citation Counts Rankings
Ranking Based On Selection: 15
Mathematical Analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
209
46
0.220
* Total Citation Counts Rankings
Ranking Based On Selection: 16
Geometric function theory
Complex analysis
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
174
136
0.782
* Total Citation Counts Rankings
Ranking Based On Selection: 17
Mathematical modeling and Biomathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
108
108
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 18
Geometric function theory
Special function. Fractional calculus
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
44
0.772
* Total Citation Counts Rankings
Ranking Based On Selection: 19
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45
10
0.222
* Total Citation Counts Rankings
Ranking Based On Selection: 20
Entrepreneurship
Management
Organisational Behaviour
Performance
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23
21
0.913
* Total Citation Counts Rankings
Ranking Based On Selection: 21
Fixed Point Theory and Its Application
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18
18
1.000
* Total Citation Counts Rankings
Ranking Based On Selection: 22
mathematical modelling
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18
9
0.500
* Total Citation Counts Rankings
Ranking Based On Selection: 23
Mathematical modelling/Biomathematics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16
14
0.875
* Total Citation Counts Rankings
Ranking Based On Selection: 24
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000
* Total Citation Counts Rankings
Rankings
76,826
33
4
Ranking Based On Selection: 1
Hanaa Hachimi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
12,321
6,595
0.535
* Total Citation Counts Rankings
Rankings
252,252
235
17
Ranking Based On Selection: 2
Yekini Shehu
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4,003
3,468
0.866
Nonlinear Operator Theory
Numerical Analysis
Optimization
Mathematical Programming
Integral Equations
* Total Citation Counts Rankings
Rankings
294,889
322
25
Ranking Based On Selection: 3
Mo Osilike
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
3,344
571
0.171
Operator Theory
Fixed Point Theory and Applications
Operator Equations
* Total Citation Counts Rankings
Rankings
616,755
1,650
21
Ranking Based On Selection: 4
Seyyed Ahmad Edalatpanah
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,187
1,142
0.962
* Total Citation Counts Rankings
Rankings
636,661
1,751
22
Ranking Based On Selection: 5
Nasreen Kausar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,123
1,111
0.989
Fuzzification of algebraic structures
Differential Equations
Numerical Analysis
* Total Citation Counts Rankings
Rankings
659,031
1,928
192
Ranking Based On Selection: 6
JC Ezeilo
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,056
88
0.083
* Total Citation Counts Rankings
Rankings
683,657
2,196
24
Ranking Based On Selection: 7
Mahmoud Smadi
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
986
491
0.498
* Total Citation Counts Rankings
Rankings
770,507
3,374
293
Ranking Based On Selection: 8
Ferdinard Ogbuisi
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
772
664
0.860
Nonlinear Functional Analysis and Non linear operator theory
* Total Citation Counts Rankings
Rankings
822,683
4,228
361
Ranking Based On Selection: 9
Uchenna Agwagah
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
664
257
0.387
Mathematics and Measurement and Evaluation
* Total Citation Counts Rankings
Rankings
985,358
7,309
539
Ranking Based On Selection: 10
Fab C.Okafor
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
424
119
0.281
* Total Citation Counts Rankings
Rankings
1,033,998
8,239
602
Ranking Based On Selection: 11
Fo Egara
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
375
372
0.992
Mathematics Teachers Education
Differential Equations
Counselling Therapies
Information Communication and Technology
Statist
* Total Citation Counts Rankings
Rankings
1,055,655
8,699
634
Ranking Based On Selection: 12
Augustina Chinyere Nzeadibe
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
355
344
0.969
Mathematics Anxiety
Mathematics Education
Metacognition
ACT
MBCT
* Total Citation Counts Rankings
Rankings
1,125,059
10,115
737
Ranking Based On Selection: 13
George Akuchu
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
300
62
0.207
Nonlinear Functional Analysis
* Total Citation Counts Rankings
Rankings
1,184,748
11,338
24
Ranking Based On Selection: 14
Adewale Adeyemi James
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
260
153
0.588
Computational Mathematics
Numerical Methods
Numerical Analysis
Differential Equations
* Total Citation Counts Rankings
Rankings
1,277,403
13,344
923
Ranking Based On Selection: 15
Sylvanus Aneke
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
209
46
0.220
* Total Citation Counts Rankings
Rankings
1,354,809
15,015
1,002
Ranking Based On Selection: 16
Uzoamaka Azuka Ezeafulukwe
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
174
136
0.782
Geometric function theory
Complex analysis
* Total Citation Counts Rankings
Rankings
1,553,902
19,740
1,226
Ranking Based On Selection: 17
Ifeanyi Sunday Onah
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
108
108
1.000
Mathematical modeling and Biomathematics
* Total Citation Counts Rankings
Rankings
1,791,005
26,053
48
Ranking Based On Selection: 18
moses omuya
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
57
44
0.772
Geometric function theory
Special function. Fractional calculus
* Total Citation Counts Rankings
Rankings
1,867,383
28,295
80
Ranking Based On Selection: 19
Abbas Sulaiman
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
45
10
0.222
* Total Citation Counts Rankings
Rankings
2,044,098
33,874
97
Ranking Based On Selection: 20
Ali Ibrahim Dasuki
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
23
21
0.913
Entrepreneurship
Management
Organisational Behaviour
Performance
* Total Citation Counts Rankings
Rankings
2,094,408
35,551
73
Ranking Based On Selection: 21
Yahaya Sirajo
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18
18
1.000
Fixed Point Theory and Its Application
* Total Citation Counts Rankings
Rankings
2,101,206
35,828
1,894
Ranking Based On Selection: 22
Ejike Eze
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
18
9
0.500
* Total Citation Counts Rankings
Rankings
2,121,794
36,533
1,908
Ranking Based On Selection: 23
Gce Mbah
University of Nigeria
Nsukka, Nigeria
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
16
14
0.875
Mathematical modelling/Biomathematics
* Total Citation Counts Rankings
Rankings
2,298,999
43,496
122
Ranking Based On Selection: 24
Sulaiman Abbas
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
4
4
1.000