English

A theorem of Krein revisited

Functional Analysis 2007-05-23 v1

Abstract

M. Krein proved in 1948 that if T is a continuous operator on a normed space leaving invariant an open cone, then its adjoint T* has an eigenvector. We present generalizations of this result as well as some applications to C*-algebras, operators on l_1, operators with invariant sets, contractions on Banach lattices, the Invariant Subspace Problem, and von Neumann algebras.

Cite

@article{arxiv.math/0209331,
  title  = {A theorem of Krein revisited},
  author = {Timur Oikhberg and Vladimir G. Troitsky},
  journal= {arXiv preprint arXiv:math/0209331},
  year   = {2007}
}

Comments

To appear in Rocky Mountain J. Math

R2 v1 2026-07-22T16:47:54.398Z