This is a good starting point: https://www.cambridge.org/us/academic/subjects/mathematics/logic-categories-and-sets/introduction-mathematical-reasoning-numbers-

This is a good starting point: https://www.cambridge.org/us/academic/subjects/mathematics/logic-categories-and-sets/introduction-mathematical-reasoning-numbers-sets-and-functions https://www.cambridge.org/us/academic/subjects/mathematics/l....