For which positive integers a is the congruence ax4 ≡ 2 (mod 13) solvable?
Elements Of Modern Algebra
8th Edition
ISBN:9781285463230
Author:Gilbert, Linda, Jimmie
Publisher:Gilbert, Linda, Jimmie
Chapter2: The Integers
Section2.3: Divisibility
Problem 23E: Let a and b be integers such that ab and ba. Prove that b=0.
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For which positive integers a is the congruence ax4 ≡ 2 (mod 13)
solvable?
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