Remarks on the point character of Banach spaces and non-linear embeddings into c_0()
arxiv(2024)
摘要
We give a brief survey of the results on coarse or uniform embeddings of
Banach spaces into c_0() and the point character of Banach spaces. In the
process we prove several new results in this direction (for example we
determine the point character of the spaces L_p(μ), 1≤ p≤2) solving
open problems posed by C. Avart, P. Komjath, and V. Roedl and by G. Godefroy,
G. Lancien, and V. Zizler. In particular, we show that X=L_p(μ), 1≤
p<∞, bi-Lipschitz embeds into c_0() if and only if X<_.
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