👉 Sectionalisation is a mathematical concept in topology that describes how one space can be partitioned into smaller spaces, each of which are homotopic to the original space. In other words, it involves slicing up a space into smaller and smaller parts, each part being homeomorphic to its own neighborhood. This allows for the study of topological properties of the larger space by studying the behavior of the smaller ones. It is often used in geometry and topology to describe how different spaces can be related to
