The quadrivium ( lat. 34, four roads " ) so called in the middle ages to the Group of four liberal arts of a mathematical nature. It was the scientific side of knowledge and included four scientific disciplines related to mathematics according to the Pythagorean Division in: ARITHMETIC, science that teaches how to make numbers.GEOMETRY, science that teaches how to calculate in the space. Astronomy, science that teaches how to cultivate the study of the stars and the movement.MUSIC, science that teaches how to produce on the basis of the time.
