The density of the terms in an elliptic divisibility sequence having a fixed G.C.D. with their indices

Autor: Seoyoung Kim
Rok vydání: 2020
Předmět:
Zdroj: Journal of Number Theory. 207:22-41
ISSN: 0022-314X
DOI: 10.1016/j.jnt.2019.06.014
Popis: Let D = ( D n ) n ≥ 1 be an elliptic divisibility sequence associated to the pair ( E , P ) . For a fixed integer k, we define A E , k = { n ≥ 1 : gcd ⁡ ( n , D n ) = k } . We give an explicit structural description of A E , k . Also, we explain when A E , k has positive asymptotic density using bounds related to the distribution of trace of Frobenius of E. Furthermore, we obtain an explicit density for A E , k using the Mobius function.
Databáze: OpenAIRE