Yoshiharu Kohayakawa

Yoshiharu Kohayakawa is a Japanese-Brazilian mathematician working on discrete mathematics and probability theory. He is known for his work on Szemerédi's regularity lemma, which he extended to sparser graphs.

Biography

Kohayakawa has a PhD advised by Béla Bollobás at the University of Cambridge with the dissertation External Combinatorics and the Evolution of Random Graphs.
According to Google Scholar, as of August 21, 2019, Kohayakawa's works have been cited over 3194 times, and his h-index is 33.
He is a titular member of the Brazilian Academy of Sciences.
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.
Kohayakawa has an Erdős number of 1.
He was awarded the 2018 Fulkerson Prize.