English

Limit Theorems for Numerical Index

Functional Analysis 2011-06-27 v1 Operator Algebras

Abstract

We improve upon on a limit theorem for numerical index for large classes of Banach spaces including vector valued p\ell_p-spaces and p\ell_p-sums of Banach spaces where 1p1\leq p \leq \infty. We first prove n1(X)=limmn1(Xm) n_1(X) = \displaystyle \lim_m n_1(X_m) for a modified numerical index n1(.)n_1(\, .\,). Later, we establish if a norm on XX satisfies the local characterization condition, then n(X)=limmn(Xm).n(X) = \displaystyle\lim_m n(X_m). We also present an example of a Banach space where the local characterization condition is satisfied.

Keywords

Cite

@article{arxiv.1106.4822,
  title  = {Limit Theorems for Numerical Index},
  author = {Asuman Güven Aksoy and Grzegorz Lewicki},
  journal= {arXiv preprint arXiv:1106.4822},
  year   = {2011}
}
R2 v1 2026-06-21T18:26:47.270Z