
handle: 20.500.14352/49597
We prove that a tensor norm $\alpha$ (defined on tensor products of Hilbert spaces) is the Hilbert-Schmidt norm if and only if $\ell_2\otimes\cdots\otimes \ell_2$, endowed with the norm $\alpha$, has an unconditional basis. This extends a classical result of Kwapień and Pełczyński. The symmetric version of that statement follows, and this extends a recent result of Defant, Díaz, García and Maestre.
Tensor products, Unconditional basis, Summability and bases; functional analytic aspects of frames in Banach and Hilbert spaces, Hilbert-Schmidt norm, tensor products, Polynomials, 517.98, unconditional basis, (Spaces of) multilinear mappings, polynomials, Banach-spaces, Multilinear operators, Forms, Hilbert-Schmidt operators, Spaces of operators; tensor products; approximation properties, P-summing operators, Análisis funcional y teoría de operadores
Tensor products, Unconditional basis, Summability and bases; functional analytic aspects of frames in Banach and Hilbert spaces, Hilbert-Schmidt norm, tensor products, Polynomials, 517.98, unconditional basis, (Spaces of) multilinear mappings, polynomials, Banach-spaces, Multilinear operators, Forms, Hilbert-Schmidt operators, Spaces of operators; tensor products; approximation properties, P-summing operators, Análisis funcional y teoría de operadores
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