Think you’ve mastered quadratic equations? Think again! This insanely tricky problem will put your algebra skills to the ...

Quadratic systems of equations appear in several applications. The results in this letter are motivated by quadratic systems of equations that describe equilibrium behavior of physical infrastructure ...

A branch flow model (BFM) is used to formulate the AC power flow in general networks. For each branch/line, the BFM contains a nonconvex quadratic equality. A mathematical formulation of its convex ...