English

Effective construction of a class of positive operators in Hilbert space, which do not admit triangular factorization

Classical Analysis and ODEs 2012-11-29 v1 Functional Analysis

Abstract

A class of non-factorable positive operators is constructed. As a result, pure existence theorems in the well-known problems by Ringrose, Kadison and Singer are substituted by concrete examples.

Keywords

Cite

@article{arxiv.1009.1762,
  title  = {Effective construction of a class of positive operators in Hilbert space, which do not admit triangular factorization},
  author = {Lev Sakhnovich},
  journal= {arXiv preprint arXiv:1009.1762},
  year   = {2012}
}
R2 v1 2026-06-21T16:11:40.509Z