Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4600238 | Linear Algebra and its Applications | 2012 | 10 Pages |
Abstract
We give an explicit characterization of all extreme rays of the cone C5 of 5×5 copositive matrices. We show that the extreme rays which are not positive semi-definite or nonnegative form a 10-dimensional variety, which can be parameterized in a semi-trigonometric way.
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