This course is designed to understand mathematical tools useful for the rest of your Master program, especially for the upcoming, mandatory courses in statistics and game theory. The course reviews some mathematical concepts most of you will be familiar with from high school, such as functions, derivatives, integrals, vectors, matrices and distributions. However, we will introduce and study these topics more rigorously. To provide a deeper understanding of important results, we will also prove some fundamental theorems in class. We will cover fundamentals in single and (partially) multivariable calculus, linear algebra and probability theory. Each day consists of lectures and exercise sessions.