English

An intrinsic characterization of semi-normal operators

Spectral Theory 2015-02-03 v2

Abstract

Two necessary and sufficient conditions for an operator to be semi-normal are revealed. For a Volterra integration operator the set where the operator and its adjoint are metrically equal is described.

Keywords

Cite

@article{arxiv.1410.5265,
  title  = {An intrinsic characterization of semi-normal operators},
  author = {L. Z. Gevorgyan},
  journal= {arXiv preprint arXiv:1410.5265},
  year   = {2015}
}