An American professor at the University of Texas, Austin, has won the 6 million kroner ($1 million) Abel Prize for mathematics.

The prize jury praises John Tate as "a prime architect" of number theory, a branch of mathematics that has played a key role in the development of modern computers.

The award citation issued Wednesday says Tate "has truly left a conspicuous imprint on modern mathematics" by advancing "one of (its) most elaborate and sophisticated branches."

The annual Abel Prize was created by the Norwegian government in 2003 and is awarded to candidates who have contributed to the mathematical sciences. The winner is selected by an international committee of five mathematicians.

The prize will be given to Tate at a May 25 ceremony in Oslo.