Geometric measure theory

Geometric measure theory is a mathematical field and is a way to measure the sizes and shapes of spaces, like you would measure the size of circles, triangles, and other shapes in math class. It uses a system of different measurements and tools to measure things, like rulers and pattern pieces, as well as equations and formulas. The idea is to measure shapes and sizes in a way that is consistent, accurate, and easy to understand. It's like measuring shapes and sizes in a very precise way that leaves no room for guessing.