4-polytope stubs

The term "4-polytope stubs" does not appear to be a standard term in mathematics or geometry as of my last knowledge update. However, it seems to suggest a focus on properties or structures related to 4-dimensional polytopes (also known as 4-polytopes). A **4-polytope** is a four-dimensional generalization of a polytope, which can be thought of as a shape in four-dimensional space.