Gyula O. H. Katona

Gyula O. H. Katona (born 16 March 1941 in Budapest) is a Hungarian mathematician known for his work in combinatorial set theory, and especially for the Kruskal–Katona theorem[1] and his beautiful and elegant proof of the Erdős–Ko–Rado theorem in which he discovered a new method, now called Katona's cycle method.

[2] Since then, this method has become a powerful tool in proving many interesting results in extremal set theory.

He is affiliated with the Alfréd Rényi Institute of Mathematics of the Hungarian Academy of Sciences.

In 2011 the Alfréd Rényi Institute, the János Bolyai Society and the Hungarian Academy of Sciences organized a conference in honor of Katona's 70th birthday.

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