👉 In mathematics, "heavies" are a class of functions that have a singularity at every point in their domain. These functions are often used in physics and engineering to model systems with non-uniform density or mass distribution. They can be thought of as the result of integrating a function over an infinite set of points where the function is not continuous, but instead behaves like a smooth function on that set.
For example, consider a system with a force f(x), which acts on a particle
heavies