Structure of closed subideals of $\mathcal{L}(X)$

Hans-Olav Tylli, Henrik Wirzenius

The closed subalgebra $\mathcal{J}$ of the Banach algebra $\mathcal{L}(X)$ of bounded linear operators on the Banach space $X$ is a non-trivial closed $\mathcal{I}$-subideal of $\math…