Roots and Logarithms of Multipliers

Jingbo Xia, Congquan Yan, Danjun Zhao +1

By now it is a well-known fact that if $f$ is a multiplier for the Drury-Arveson space $H_n^2$, and if there is a $c>0$ such that $|f(z)|\ge c$ for every $z\in B$, then the recipr…