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◇ arXiv2026-08-12· math.FA

Nonrigidity of the trigonometric system in $L_p$ for $1\le p<2$

Arthur Sinai

原始摘要(英文原文)· Original abstract
We prove that the trigonometric system $\mathcal{E}_N = \{e_k\}_{|k| \le N}$ is not rigid in $L_p(\mathbb{T})$ for $1 \le p < 2$. That is, as $N\to\infty$, all its elements are approximated with error $o(1)$ by a subspace of dimension $o(N)$.
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Nonrigidity of the trigonometric system in $L_p$ for $1\le p<2$ — 科研速览 Science Skim