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A factorization constant for $l^n_p

By N. Tenney Peck


We prove that if PT is a factorization of the identity operator on \ell_p^n through \ell_{\infty}^k, then ||P|| ||T|| \geq Cn^{1/p-1/2}(log n)^{-1/2}. This is a corollary of a more general result on factoring the identity operator on a quasi-normed space through \ell_{\infty}^k

Topics: Mathematics - Functional Analysis, 46A
Year: 1993
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