Definiteness and semidefiniteness of quadratic forms revisited (Q799766)
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scientific article; zbMATH DE number 3873519
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | Definiteness and semidefiniteness of quadratic forms revisited |
scientific article; zbMATH DE number 3873519 |
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Definiteness and semidefiniteness of quadratic forms revisited (English)
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1984
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This paper shows how properties of the Schur complement can be used to develop criteria for the definiteness (or semi-definiteness) of the restriction of a quadratic form to the null space of a matrix. Information of this sort is of interest in connection with constrained optimization problems, among others.
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restriction to subspace
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Schur complement
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semi-definiteness
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quadratic form
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