Publisher Correction: On Tractable Convex Relaxations of Standard Quadratic Optimization Problems under Sparsity Constraints

In this article, the hyper-links were missing for the equations (R1()), (R2) and (R3()) in few instances and have been included.In the proof of Lemma 3.4, in the sentence 'By the Schur complement lemma, it follows that ( ', the equation (R1()) was incorrectly cited instead of (R2()).The correct sentence should read as 'By the Schur complement lemma, it follows that (x, u, X , U , R) R n R n S n S n R nn is (R2())-feasible.Therefore (x, X ) F R2 '.