Practice Number Theory Problems
6.857 : Handout 9: Practice Number Theory Problems 3 (b) Show that if a b mod n, then for all positive integers c, ac bc mod n. Since a b mod n, there exists q 2Z such that a = b + nq. This means that ac = (b + nq)c. If we compute mod n on both sizes, nqc cancels out and we obtain ac …
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