Geodesic
Interior points of the completely positive cone
The electronic journal of linear algebra, Tome 17 (2008), pp. 48-53.

Voir la notice de l'article provenant de la source Electronic Library of Mathematics

Summary: A matrix A is called completely positive if it can be decomposed as A = BB T with an entrywise nonnegative matrix B. The set of all such matrices is a convex cone which plays a role in certain optimization problems. A characterization of the interior of this cone is provided.
Classification : 15A23, 15A48
Keywords: completely positive matrices, copositive matrices, cones of matrices 
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     title = {Interior points of the completely positive cone},
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Dür, Mirjam; Still, Georg. Interior points of the completely positive cone. The electronic journal of linear algebra, Tome 17 (2008), pp. 48-53. http://geodesic.mathdoc.fr/item/ELA_2008__17__a40/