Abstract: Jacobian determinants are ubiquitous in mathematical analysis, and there exist numerous applications for this object in varying contexts, ranging from nonlinear elasticity to geometric analysis.
In this mini-course, we will focus on the minimal requirements on regularity of the underlying function space in order to be able to define the Jacobian determinant as a distribution, and investigate some of its properties in spaces of low regularity, such as change-of-variables type formulas.