What is the difference between pure and applied math? Don’t worry if you don’t know the answer! I’m here to help explain.
When I got to Harvard as a first-year student, I had some idea of what I wanted to study. I was a STEM-oriented student, but I was also a music lover and open to learning about new disciplines. Math was a subject I was planning on continuing so I could have a solid foundation in science classes. I then learned that there were two types of math I could study: pure mathematics and applied mathematics. Initially, I felt slightly overwhelmed because I had never heard of the distinction before; I thought math was just math! Luckily, both the Math and Applied Mathematics departments have very helpful and kind people who are here to help students.
Logistically, pure mathematics requires 12 courses (48 credits), of which 8 are in the math department and four are in math or related subjects. Applied mathematics requires 14-15 courses, including five courses in a chosen application area. Happily, if you are not sure which to choose, but you do know you want to study mathematics, many courses overlap and will count for both concentration requirements.
In terms of what differs between the two concentrations, it is actually pretty intuitive! Essentially, pure mathematics focuses on abstract and theoretical concepts in math working to prove theorems and research and discover new realms of math. Pure math courses are heavily proof-based and deal with theoretical possibilities of math. On the other hand, applied mathematics focuses on ways to use math. This is why all students choose a specific application area within their applied math concentration. For example, many students choose economics as their application area and take courses learning the mechanics of how to use math in economic situations.
Math is also interdisciplinary. Last semester, I took Applied Math 50: Introduction to Applied Mathematics. In this class, we learned about many different areas of study in math, including topics like epidemiology, game theory and network theory. The exposure to many different subjects helped us all gain an understanding of what sorts of processes and systems math can help create and also see how they might relate. Many processes that help create models in one subject, like epidemiology, can also be used in the same way to learn how connected humans are socially. The end of the class concluded with a final project where we used coding skills and math processes we had learned about to research our own topic. My group decided to study how the attributes of popular music in the U.S. affect their chart rating. It was fascinating to combine music and math together and come out with analyses from the data.
Both concentrations are highly useful for gaining a broad and comprehensive understanding of math that will help students in the workforce or in further academic endeavors. Math is simply everywhere and serves as the backbone to many systems we rely on every day and might even take for granted.