Subspaces of $\ell_1$ satisfying Grothendieck's theorem

Jesús Suárez

doi:10.1016/j.bulsci.2017.10.002

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arXiv · 2501.12715

Subspaces of $\ell_1$ satisfying Grothendieck's theorem

Jesús Suárez

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Abstract

We characterize the subspaces $X$ of $\ell_1$ satisfying Grothendieck's theorem in terms of extension of nonnegative quadratic forms $q:X \longrightarrow \mathbb R$ to the whole $\ell_1$.

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Jesús Suárez. 2025-01-22. Subspaces of $\ell_1$ satisfying Grothendieck's theorem. https://doi.org/10.1016/j.bulsci.2017.10.002

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