The new Fields Medal winner Zimmerman officially announced that he has joined OpenAI. The winner of the highest honor in mathematics has turned to AI security. The 2026 International Congress of Mathematicians opened in Philadelphia. This year’s four Fields Medal winners were announced - Deng Yu, John Padden, Jacob Zimmerman and Wang Hong.

Zimmerman, the new winner of the Fields Medal, officially announced that he has joined OpenAI. The winner of the highest honor in mathematics has turned to AI security. The 2026 International Congress of Mathematicians opened in Philadelphia. This year’s four Fields Medal winners were announced - Deng Yu, John Padden, Jacob Zimmerman and Wang Hong. Among them, Deng Yu and Wang Hong became the first Chinese mathematicians to win the Fields Medal since its establishment. Zimmerman, another new winner, announced at the post-match press conference that he would turn to research in the field of AI security and would soon join OpenAI. The core conjecture was overcome, and his mathematical talent was highly praised by OpenAI. The core capital of Zimmerman's winning of the award is to reshape the o-minimality theory into a basic research tool for arithmetic geometry and complex algebraic geometry, and successfully prove a number of core conjectures in the academic world, including the algebraic conjecture of Griffith's periodic image and the Andre-Oort conjecture related to Siegel module varieties, which laid a heavy foundation for the development of number theory. OpenAI chief research officer Mark Chen and former Microsoft AI vice president and current OpenAI researcher Bubeck both confirmed and expressed their welcome. Mark Chen commented that Zimmerman has top mathematical talent, and his rigorous and prudent attitude towards AI safety issues and his profound and original thinking are equally admirable. *MO won two gold medals and studied under the famous number theory master Sanak Zimmerman. He is a Canadian mathematician who specializes in number theory, arithmetic geometry and transcendental number theory. He was born in 1988. As a teenager, he represented Canada in the International Mathematical Olympiad (IMO) in 2003 and 2004, winning gold twice and scoring a perfect score in 2004. He studied at the University of Toronto for his undergraduate degree and received his PhD in mathematics from Princeton in 2011. He studied under the famous number theory expert Peter Sarnak. He then served as a postdoctoral fellow in the Harvard Scholars Association and has taught in the Department of Mathematics at the University of Toronto since 2014. A scholar who has just reached the pinnacle of the mathematics community chooses to cross-border and join AI security. This decision itself sends a strong signal—at a time when AI capabilities are rapidly improving, security governance is becoming as attractive to top talents as pure academic research. via AI News (author: AI Base)