合唱团
发表于 2025-3-30 08:54:45
Basic Number Theory,of integers by ℤ. The positive integers, 1, 2, 3..., are called the ., which we will denote by ℕ. We will assume that the reader is familiar with the basic arithmetic properties of ℤ, and in this section we will look at the abstract algebraic properties of the integers and what makes ℤ unique as an algebraic structure.