On the closed subideals of $L({\ell }_p\oplus {\ell }_q)$

Abstract

In this paper we first review the known results about the closed subideals of the space of bounded operator on ${\ell }_p\oplus {\ell }_q$, $1<p<q<\infty$, and then construct several new ones.

arXiv commentTo appear in Operators and Matrices