the systematic treatment of magnitude, relationships between figures and forms, and relations between quantities expressed symbolically. (Dictionary.com)
math·e·mat·ics (măth′ə-măt′ĭks) n. (used with a sing. verb) The study of the measurement, properties, and relationships of quantities and sets, using numbers and symbols.
https://www.youtube.com/watch?v=BgvXF1sc3Uk That's Danny boy right there ^