Eichfelder, Gabriele; Groetzner, Patrick - In: Journal of Global Optimization 82 (2021) 3, pp. 615-626
In a single-objective setting, nonconvex quadratic problems can equivalently be reformulated as convex problems over the cone of completely positive matrices. In small dimensions this cone equals the cone of matrices which are entrywise nonnegative and positive semidefinite, so the convex...