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

28 Jul 2016  ·  Sain Debmalya ·

In this paper we characterize Birkhoff-James orthogonality of linear operators defined on a finite dimensional real Banach space $ \mathbb{X}. $ We also explore the symmetry of Birkhoff-James orthogonality of linear operators defined on $ \mathbb{X}... $ Using some of the related results proved in this paper, we finally prove that $ 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 $ is the zero operator. We conjecture that the result holds for any finite dimensional strictly convex and smooth real Banach space $ \mathbb{X}, $ in particular for the Banach spaces $ l_{p}^{n} (p > 1, p \neq \infty). $ read more

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Functional Analysis