The $(n+1)$-centered operator on a Hilbert $C^{\ast }$-module

Na Liu, Qingxiang Xu, Xiaofeng Zhang

Let $T$ be an adjointable operator on a Hilbert $C^{\ast }$-module such that $T$ has the polar decomposition $T=UT|$. For each natural number $n$, $T$ is called an $(n+1)$-centered opera…