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arxiv: 1604.02682 · v1 · pith:AIPJMI7Snew · submitted 2016-04-10 · 🧮 math.FA · math.SP

The invertibility of 2X2 operator matrices

classification 🧮 math.FA math.SP
keywords operatorinvertibilitymatricesdecompositionapplicationcharacterizehamiltonianinvertible
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In this paper the properties of right invertible row operators, i.e., of 1X2 surjective operator matrices are studied. This investigation is based on a specific space decomposition. Using this decomposition, we characterize the invertibility of a 2X2 operator matrix. As an application, the invertibility of Hamiltonian operator matrices is investigated.

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