2 papers
math.NT2026
Large common values of generalized Ankeny-Brauer-Chowla recurrences
Armand Noubissie, Robert F. Tichy
In this paper we count the number of common values shared by two linear recurrence sequences, whose characteristic polynomials are a generalized Ankeny-Brauer-Chowla polynomial and…
math.NT2025
Decidability of multiplicative matrix equations and related Diophantine problems
Sebastian Heintze, Armand Noubissie, Robert F. Tichy
Some new decidability results for multiplicative matrix equations over algebraic number fields are established. In particular, special instances of the so-called knapsack problem a…