The development of the Four-Color Theorem from a mathematical perspective requires rigorous definitions of its concepts. To organize these ideas is not a simple task, and it requires a certain amount of effort. Inevitably, this will lead to some very abstract thinking. However, initially, we shall be guided by our intuition. Out of this intuition, geometric-topological objects called maps will be realized. Although the fundamental ideas arise in a set-theoretic topological setting, the Four-Color Theorem itself is of a combinatorial nature.
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