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We begin this chapter with a discussion of the principle of division with remainder. In relation to this we shall explain the significance of these remainders, their possible applications, and how one calculates with them. In order for the functions to be introduced later to be understandable, we begin with a bit of algebra.
We have seen that in division with remainder of an integer
a € • by a natural number 0
< m € • one has the unique representation
r is called the remainder after division of
m or the residue of ...