Basic PropertiesCovers basic properties of natural numbers, including order relations and inverses.
Integers and RingsCovers integers, rings, subrings, invertibility, divisors of zero, and equivalence relations in formal fractions.
Integers: Elementary ConceptsCovers fundamental concepts related to integers, including properties of well-ordered sets and the principle of induction.
Properties of DivisionCovers the properties of division in integers and the relationship between divisibility and unique quotients.