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Three Dimensional Strongly Symmetric Circulant Tensors
Published 13 Apr 2015 in math.SP | (1504.03066v2)
Abstract: In this paper, we give a necessary and sufficient condition for an even order three dimensional strongly symmetric circulant tensor to be positive semi-definite. In some cases, we show that this condition is also sufficient for this tensor to be sum-of-squares. Numerical tests indicate that this is also true in the other cases.
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