Specialization, Generalization and Unification of Structures

In this chapter, we exemplify specialized structures that can then be generalized and unified. The aim of the chapter is not to provide an exhaustive list of well-motivated structures that have not yet been listed in the first two parts. Otherwise, e.g., the absence of combinatorial structures would be inexcusable. Rather, the aim is to convey a sense that the structural considerations of the first two parts allow us to place a multitude of mathematical terms without much effort.