Tensor product of left n-invertible operators
Tensor product of left n-invertible operators
A Banach space operator $T\in\mathcal X$ has a left $m$-inverse (resp., an essential left $m$-inverse) for some integer $m\geq 1$ if there exists an operator $S\in\mathcal X$ (resp., an operator $S\in\mathcal X$ and a compact operator $K\in\mathcal X$) su