most citedSum of squares representation for the Böttcher-Wenzel biquadratic form

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cs.DM2012★ 1 cited

Sum of squares representation for the Böttcher-Wenzel biquadratic form

Lajos László

We find the minimum scale factor, for which the nonnegative Böttcher-Wenzel biquadratic form becomes a sum of squares (sos). To this we give the primal and dual solutions for the u…