He began to study under Ivar Bendixson and Helge von Koch . Hille was awarded his first degree in mathematics in 1913 and the equivalent of a Master's degree in the following year.
Siya ay nagsimulang mag-aral sa ilalim ng Ivar Bendixson at Helge von Koch. Hille ay iginawad sa kanyang unang degree sa matematika sa 1913 at ang katumbas ng isang Master's degree sa mga sumusunod na taon.