The course aims to explain the markets functioning. The approach is quantitative but also managerial and operative. After a short introduction of the mathematical tools the course follows the chapters of the text book "Microeconomics" by R.S. Pindyck e D.L. Rubinfeld 7th or later international edition isbn 978--13-713335-2. However some classes, expecially those more mathematically formalized, will be based on "Microeconomics: basic Principles and Extensions" by W. Nicholson , South_Western editor 1th or later international student edition.