Many real-life activities exploit sets and operations among them, while others take advantage of logic. On the other hand, logic is supposed to rule correct reasoning: here you will learn which are the relations tying together these two branches of mathematics.

How does mathematics cope with relations? Learn which kind of relations fall in the domain of science.

Here you will learn what kinds of global properties functions can have.

When infinity manifests itself always unexpected things happen. Discover them!

Learn a peculiar technique of demonstration for properties of natural numbers.