15. Let r be a primitive root of n. If gcd(a, n) = 1, then the smallest positive integer k such that a = rh (mod n) is called the index of a relative to r, denoted by ind,a. The theory of indices can be used to solve congruences. Consider the properties of indices (p. 164) and example 8.4 (p. 164). Solve pI43? 8x = 11 (mod 13)
15. Let r be a primitive root of n. If gcd(a, n) = 1, then the smallest positive integer k such that a = rh (mod n) is called the index of a relative to r, denoted by ind,a. The theory of indices can be used to solve congruences. Consider the properties of indices (p. 164) and example 8.4 (p. 164). Solve pI43? 8x = 11 (mod 13)
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter6: More On Rings
Section6.3: The Characteristic Of A Ring
Problem 6E
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