文法学・修辞学・論理学
Grammar, Rhetoric and Logic
were the core liberal arts. In medieval times these subjects (called the Trivium)
were extended to include
数学・幾何学・天文学
音楽
mathematics, geometry, music and astronomy (which included the study of astrology).
This extended curriculum was called the Quadrivium. Together the Trivium and Quadrivium constituted the seven liberal arts of the medieval university curriculum.
--from Wikipedia 'Liberal arts'.
