English

On the modulus of C. J. Read's operator

Functional Analysis 2007-05-23 v1

Abstract

Let T be the quasinilpotent operator on ell_1 without an invariant subspace constructed by C. J. Read in [R3]. We prove that the modulus of this operator has an invariant subspace (and even an eigenvector). This answers a question posed by Y. Abramovich, C. Aliprantis and O. Burkinshaw in [AAB1,AAB3]

Keywords

Cite

@article{arxiv.math/9805124,
  title  = {On the modulus of C. J. Read's operator},
  author = {Vladimir G. Troitsky},
  journal= {arXiv preprint arXiv:math/9805124},
  year   = {2007}
}

Comments

8 pages, LaTeX2e, to appear in Positivity

R2 v1 2026-07-22T17:58:40.876Z