Citation Rankings
Highly Cited Researchers

Natural Sciences / Mathematical Sciences Highly Cited Researchers 5 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
Brazil
António Gouveia Oliveira
Bioestatistics
Epidemiology
Clinical trials
Medical informatics
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,756
3,576
0.408
* Total Citation Counts Rankings
Ranking Based On Selection: 2
Brazil
Regivan HN Santiago
Teoria da Computação. Sistemas Fuzzy. Teoria dos Domínios. Lógica. Topologia. Matemática Intervalar
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,814
883
0.487
* Total Citation Counts Rankings
Ranking Based On Selection: 3
Brazil
Umberto Rivieccio
Non-classical Logics
Algebraic Logic
Logic in Computer Science
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,143
620
0.542
* Total Citation Counts Rankings
Ranking Based On Selection: 4
Brazil
Marcelo Siqueira
Geometric modeling
computational geometry
and digital topology
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
352
57
0.162
* Total Citation Counts Rankings
Rankings
116,955
Brazil
1,790
14
Ranking Based On Selection: 1
António Gouveia Oliveira
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
8,756
3,576
0.408
Bioestatistics
Epidemiology
Clinical trials
Medical informatics
* Total Citation Counts Rankings
Rankings
479,380
Brazil
14,460
131
Ranking Based On Selection: 2
Regivan HN Santiago
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,814
883
0.487
Teoria da Computação. Sistemas Fuzzy. Teoria dos Domínios. Lógica. Topologia. Matemática Intervalar
* Total Citation Counts Rankings
Rankings
638,881
Brazil
21,186
186
Ranking Based On Selection: 3
Umberto Rivieccio
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
1,143
620
0.542
Non-classical Logics
Algebraic Logic
Logic in Computer Science
* Total Citation Counts Rankings
Rankings
1,072,682
Brazil
36,782
295
Ranking Based On Selection: 4
Marcelo Siqueira
Citation Metrics
Total
Last 6 Years
Last 6 Years / Total
352
57
0.162
Geometric modeling
computational geometry
and digital topology
* Total Citation Counts Rankings
Rankings
1,168,139
Brazil
38,700
301
Ranking Based On Selection: 5