Kazuya Kato (加藤 和也, Katō Kazuya, born on January 17, 1952) is a Japanese mathematician who works at the University of Chicago and specializes in number theory and arithmetic geometry.
He attended college at the University of Tokyo, from which he also obtained his master's degree in 1975, and his PhD in 1980.
[3] Kato's first work was in the higher-dimensional generalisations of local class field theory using algebraic K-theory.
In 2005, Kato received the Imperial Prize of the Japan Academy for "Research on Arithmetic Geometry".
He wrote a book on Fermat's Last Theorem and is also the coauthor of two volumes of the trilogy on Number Theory, which have been translated into English.