English

Birkhoff-James orthogonality of linear operators on finite dimensional Banach spaces

Functional Analysis 2016-07-29 v1

Abstract

In this paper we characterize Birkhoff-James orthogonality of linear operators defined on a finite dimensional real Banach space X. \mathbb{X}. We also explore the symmetry of Birkhoff-James orthogonality of linear operators defined on X. \mathbb{X}. Using some of the related results proved in this paper, we finally prove that TL(lp2)(p2,p) T \in \mathbb{L}(l_{p}^2) (p \geq 2, p \neq \infty) is left symmetric with respect to Birkhoff-James orthogonality if and only if T T is the zero operator. We conjecture that the result holds for any finite dimensional strictly convex and smooth real Banach space X, \mathbb{X}, in particular for the Banach spaces lpn(p>1,p). l_{p}^{n} (p > 1, p \neq \infty).

Keywords

Cite

@article{arxiv.1607.08488,
  title  = {Birkhoff-James orthogonality of linear operators on finite dimensional Banach spaces},
  author = {Debmalya Sain},
  journal= {arXiv preprint arXiv:1607.08488},
  year   = {2016}
}