On a generalization of Artin's Conjecture to composite moduli
13:30:00 - 14:30:00
103 , Mathematics Research Center Building (ori. New Math. Bldg.)
For a given non-zero integer a other than 1, -1, or a perfect square, Artin's primitive root conjecture is about the density of primes p for which a is a primitive root of the multiplicative group of integers modulo p. Li and Pomerance formulated and proved an analogue of this conjecture to composite moduli. More precisely, let N_a(x) be the number of positive integers n less or equal x such that (a,n)=1 and a generates the largest cyclic subgroup of the multiplicative group of integers modulo n. They showed that
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