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math.NT2016
The dynamical Mordell-Lang conjecture in positive characteristic
Dragos Ghioca
Let K be an algebraically closed field of prime characteristic p, let N be a positive integer, let f be a self-map on the algebraic torus T=G_m^N defined over K, let V be a curve i…
math.NT2016
On roots of unity in orbits of rational functions
Alina Ostafe
In this paper we characterise univariate rational functions over a number field $\K$ having infinitely many points in the cyclotomic closure $\K^c$ for which the orbit contains a r…