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math.OC2009★ 15 cited
A Note on the Convex Hull of Finitely Many Projections of Spectrahedra
Tim Netzer, Rainer Sinn
A spectrahedron is a set defined by a linear matrix inequality. A projection of a spectrahedron is often called a semidefinitely representable set. We show that the convex hull of…
math.OC2006
A note on the representation of positive polynomials with structured sparsity
David Grimm, Tim Netzer, Markus Schweighofer
We consider real polynomials in finitely many variables. Let the variables consist of finitely many blocks that are allowed to overlap in a certain way. Let the solution set of a f…