Question: Behind an Australian-American mathematician who has worked in various areas of mathematics and who else is a Romanian child prodigy in mathematics the third youngest gold medalist in IMO history ?
Sentence (from "Ömer Cerrahoğlu"): At the age of , he won a gold medal at the 2009 International Mathematical Olympiad, making him the third youngest gold medalist in IMO history, behind Terence Tao and Raúl Chávez Sarmiento.
Relevant evidence: Yes