Year: 2026
Type: preprint
Abstract: We study the periodicity and $p$-adic convergence of sequences of values of the translated division polynomials $(Ψ_n(P))_{n\geq 0}$, $(Φ_n(P))_{n\geq 0}$, and $(Ω_n(P))_{n\geq 0}$ evaluated at a pair of points on an elliptic curve. We prove that these sequences are purely periodic over finite fields. We then use their periodicity properties to prove that certain subsequences are $\mathbb{Z}_p$-Cauchy. Applying this result to Somos 4 and Somos 5 sequences yields analogous convergence results. We also establish pure periodicity modulo prime powers for the even- and odd-indexed subsequences of Somos 5 sequences under suitable hypotheses.
Source: arXiv (Cornell University)
Authors: Gezer, Betül, Bizim, Osman
Institution: Bursa Uludağ Üni̇versi̇tesi̇
Language: English
Subfield: Geometry and Topology
Field: Mathematics
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W7168267832