Positivity of $2\times2$ block matrices of operators (Q2314370)
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| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Positivity of $2\times2$ block matrices of operators |
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Positivity of $2\times2$ block matrices of operators (English)
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22 July 2019
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The paper considers a review of the well-kown \textit{R. G. Douglas} result [Proc. Am. Math. Soc. 17, 413--415 (1966; Zbl 0146.12503)], and also an specific application for characterizing the positivity of $2\times 2$ block matrices of operators.
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positive operator
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block matrix
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Hilbert space
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