Let g, f1, ..., $f_{n} \in H^{\infty}$. We give a sufficient condition on the size of a function g in order for it to be in the ideal generated by f1, ..., fn. In particular, this improves Cegrell's result on this problem.
Materia(s):
-Funcions enteres -Funcions meromorfes -Àlgebra commutativa -Àlgebres de Banach -Entire and meromorphic functions -Commutative Banach algebras