Yoshiharu Kohayakawa
Yoshiharu Kohayakawa (Japanese: 小早川美晴; born 1963) is a Japanese-Brazilian mathematician working on discrete mathematics and probability theory.[1] He is known for his work on Szemerédi's regularity lemma, which he extended to sparser graphs.[2][3]
Biography
[edit]Kohayakawa has a PhD advised by Béla Bollobás at the University of Cambridge with the dissertation External Combinatorics and the Evolution of Random Graphs.[4]
According to Google Scholar, as of August 21, 2019, Kohayakawa's works have been cited over 3194 times, and his h-index is 33.[5]
He is a titular member of the Brazilian Academy of Sciences.[1]
In 2000, five American researchers received a USA NSF Research Grant in the value of $20,000 to go to Brazil to work in collaboration with him on mathematical problems.[6]
Kohayakawa has an Erdős number of 1.[7][8]
He was awarded the 2018 Fulkerson Prize.[9]
References
[edit]- ^ a b "Yoshiharu Kohayakawa – ABC – Academia Brasileira de Ciências". www.abc.org.br. Retrieved 2025-07-07.
- ^ László Lovász – Large Networks and Graph Limits, p. 395
- ^ Bridget S. Webb – Surveys in Combinatorics 2005, p. 227
- ^ Mathematics Genealogy Project – Yoshiharu Kohayakawa
- ^ Google Scholar Profile – Yoshiharu Kohayakawa
- ^ U.S.-Brazil Cooperative Research: Problems on Random Graphs (Structures) and Set Systems: NSG GRANT 0072064
- ^ "Celina Herrera de Figueiredo: My Erdös number". www.cos.ufrj.br. Retrieved 2025-07-07.
- ^ Erdős, Paul; Gyárfás, András; Kohayakawa, Yoshiharu (1997-12-01). "The size of the largest bipartite subgraphs". Discrete Mathematics. 177 (1): 267–271. doi:10.1016/S0012-365X(97)00004-6. ISSN 0012-365X.
- ^ FAPESP. "Yoshiharu Kohayakawa, professor no IME-USP, ganha prêmio internacional em matemática". AGÊNCIA FAPESP (in Brazilian Portuguese). Retrieved 2025-07-07.
External links
[edit]| International | |
|---|---|
| National | |
| Academics | |
| Other | |
- 1963 births
- Living people
- 20th-century Brazilian mathematicians
- 21st-century Brazilian mathematicians
- Members of the Brazilian Academy of Sciences
- Graph theorists
- Alumni of the University of Cambridge
- Academic staff of the University of São Paulo
- Expatriate academics in Brazil
- Japanese expatriates in Brazil
- Professors of the Institute of Mathematics and Statistics, University of São Paulo