English

Operators on C_{0}(L,X) whose range does not contain c_{0}

Functional Analysis 2008-01-16 v1

Abstract

This paper contains the following results: a) Suppose that X is a non-trivial Banach space and L is a non-empty locally compact Hausdorff space without any isolated points. Then each linear operator T: C_{0}(L,X)\to C_{0}(L,X), whose range does not contain C_{00} isomorphically, satisfies the Daugavet equality ||I+T||=1+||T||. b) Let \Gamma be a non-empty set and X, Y be Banach spaces such that X is reflexive and Y does not contain c_{0} isomorphically. Then any continuous linear operator T: c_{0}(\Gamma,X)\to Y is weakly compact.

Keywords

Cite

@article{arxiv.0801.2314,
  title  = {Operators on C_{0}(L,X) whose range does not contain c_{0}},
  author = {Jarno Talponen},
  journal= {arXiv preprint arXiv:0801.2314},
  year   = {2008}
}
R2 v1 2026-06-21T10:03:07.973Z