On the Lipschitz operator ideal $\mathrm{Lip}_{0}\circ \mathcal A\circ \mathrm{Lip}_{0}$
Volume 277 / 2024
Abstract
We study a systematic way of producing a Lipschitz operator ideal from a Banach linear operator ideal $\mathcal A$. For maximal and minimal operator ideals $\mathcal A$, the Lipschitz maximal hull and minimal kernel of the Lipschitz operator ideals $\mathrm{Lip}_0 \circ \mathcal A \circ \mathrm{Lip}_0$ are investigated, respectively. Using ultraproduct techniques, we obtain the Lipschitz version of a result of Kürsten and Pietsch which characterizes maximal Lipschitz operator ideals. We characterize the linear operators which belong to $\mathrm{Lip}_0\circ \mathcal A\circ \mathrm{Lip}_0$; in many cases, they are precisely those which are in $\mathcal A$. In particular, we give some cases in which a nonlinear factorization of linear operators implies a linear one, in terms of a given Banach linear operator ideal $\mathcal A$.
