 Labelled enumeration theorem

The Labelled Enumeration Theorem, often referred to in combinatorial mathematics, deals with the counting of distinct arrangements or structures, particularly when certain items can be considered identical under specific symmetries or labels. This theorem typically provides a systematic way to count labeled objects (like trees, graphs, or arrangements) taking into account both the labels and the structures formed by these objects. While there may be variations or specific formulations of the theorem depending on the context (e.g.