In 1831 Liouville was appointed to his first academic post, as assistant to Claude Mathieu who had been appointed to Ampère's chair at the École Polytechnique.
Sa 1831 Liouville ay hihirangin upang angkinin ang kanyang unang academic-post, bilang assistant sa Totoo Hesus Mathieu na ay hihirangin upang angkinin Ampère ng upuan sa École Polytechnique.