https://maximummathematics.com/books/foundational-mathematics/set-theory/sets/index.htmlTrying to precisely define a set can be rather tricky. While there are formal definitions and axioms, here we will rely on our intuition. Even without a formal specification, we can still derive many useful results that hold up under scrutiny. In this section, we’ll learn what a set is (intuitively), and how to describe what kinds of things are in a set. Intuitively Defining a Set Sets, or collections, of objects abound in daily life. We could speak of the set of fruits available for purchase at a local grocery store, the set of birds native to North America, the set of components used to build a specific computer, the set of roads from New York to Los Angeles, and so on. We can make note of a couple of things here:Hugoen-US