Bases of subalgebras of K[[x]] and K[x]

Abdallah Assi, Pedro A. García-Sánchez, Vincenzo Micale

Let $f\_1,\dots ,f\_s$ be formal power series (respectively polynomials) in thevariable $x$. We study the semigroup of orders of the formal series inthe algebra $K[[ f1,\ldots, f\…