Ahlfors and Denjoy Conjecture

Ahlfors is a leader in the of complex analysis field in the 20th century.He is the Fields Medal and Wolf Prize winner.He began his career from proving Denjoy conjecture.He knew this conjecture for the first time on his first study-tour to Zurich.Because of Lindelof’s and Nevanlinna’s influence,Ahlfors soon made himself familiar with the relevant core knowledge and gave a complete proof of Denjoy conjecture.Therefore Ahlfors became very famous in the world of mathematics when he was 21 years old.From then on he continued his prolific and fruitful mathematical activities for more than half a century.