Yoshiharu Kohayakawa

Yoshiharu Kohayakawa (Japanese: コハヤカワヨシハル; born 1963) 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.

Kohayakawa was a student of Béla Bollobás on the University of Cambridge.

According to Google Scholar, as of 6 March 2016, Kohayakawa's works have been cited over 2330 times, and his h-index is 28.

He is a titular member of the Brazilian Academy of Sciences.

In 2000, five American researchers received an USA NSF Research Grant in the value of $20,000 to go to Brazil to work in collaboration with him on mathematical problems.

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