1. Primitive prime divisors in backward orbits.
- Author
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Li, Ruofan
- Subjects
- *
ORBITS (Astronomy) , *ALGEBRAIC numbers , *PRIME ideals , *FINITE, The - Abstract
Let f be a polynomial, a , b be two algebraic numbers, and (a n) n ≥ 1 be a sequence satisfying f (a 1) = a and f (a n) = a n − 1 for all n ≥ 2. We generalize the concept of primitive prime divisors to the shifted sequence (a n − b) n ≥ 1 and study the generalized Zsigmondy set, that is, the set of n such that all prime ideal divisors of a n − b divide at least one prior term. The finiteness of Zsigmondy sets are determined in various cases. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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