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. Author manuscript; available in PMC: 2010 Mar 9.
Published in final edited form as: IEEE Trans Signal Process. 2009 Oct 1;57(10):3918–3929. doi: 10.1109/TSP.2009.2021636

Fig. 1.

Fig. 1

Illustration of the ellipsoid inequality in two-dimensional space, red arrow denotes the position of z1 and z2 achieving maximum of 〈z1, z2〉