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On factorization of operators through the spaces $l^p.$

Oleg I. Reinov
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Abstract

We give conditions on a pair of Banach spaces $X$ and $Y,$ under which each operator from $X$ to $Y,$ whose second adjoint factors compactly through the space $l^p,$ $1\le p\le+\infty$, itself compactly factors through $l^p.$ The conditions are as follows: either the space $X^*,$ or the space $Y^{***}$ possesses the Grothendieck approximation property. Leaving the corresponding question for parameters $p>1, p\neq 2,$ still open, we show that for $p=1$ the conditions are essential.

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Oleg I. Reinov. 2001-07-20. On factorization of operators through the spaces $l^p.$. https://arxiv.org/abs/math/0107153

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