# Walk 2

## The Axioms of Zermelo and Fraenkel

This walk is the entrance into the mathematical garden. It explains the axiomatics of Zermolo and Fraenkel and provides a formal introduction of the natural numbers.

- UNIT

Introduction into the Axiomatics of Zermelo and Fraenkel - UNIT

The Mathematical Universe - UNIT

Unions and Intersections of Sets - UNIT

Direct Products and Relations - UNIT

Functions and Equivalent Sets - UNIT

Families and the Axiom of Choice - UNIT

Ordered Sets and the Lemma of Zorn - UNIT

Successor Sets and the Axioms of Peano - UNIT

The Natural Numbers and the Principle of Induction