Erratum to: Appl Math Optim DOI 10.1007/00245-017-9413-5

The original version of this article contained error in equations. Equations 3.7 and 3.10c are misplaced with different variants. This is corrected with this erratum.

The corrected equations are given below:

$$\begin{aligned} \left( \begin{array}{cc} \mathcal {X} &{} 0 \\ 0 &{} -\mathcal {R} \\ \end{array} \right) \le \frac{3}{\varepsilon }\left( \begin{array}{cc} I &{} -I \\ -I &{} I \\ \end{array} \right) \end{aligned}$$
(3.7)
$$\begin{aligned} \left( \begin{array}{cc} {{\mathcal {X}}_{\varepsilon }} &{} 0 \\ 0 &{} -{{\mathcal {R}}_{\varepsilon }} \\ \end{array} \right)&\le \frac{3}{\varepsilon }\left( \begin{array}{cc} I &{} -I \\ -I &{} I \\ \end{array} \right) . \end{aligned}$$
(3.10c)