Rank-r decomposition of symmetric tensors
Jie WEN , Qin NI , Wenhuan ZHU
Front. Math. China ›› 2017, Vol. 12 ›› Issue (6) : 1339 -1355.
Rank-r decomposition of symmetric tensors
An algorithm is presented for decomposing a symmetric tensor into a sum of rank-1 symmetric tensors. For a given tensor, by using apolarity, catalecticant matrices and the condition that the mapping matrices are commutative, the rank of the tensor can be obtained by iteration. Then we can find the generating polynomials under a selected basis set. The decomposition can be constructed by the solutions of generating polynomials under the condition that the solutions are all distinct which can be guaranteed by the commutative property of the matrices. Numerical examples demonstrate the efficiency and accuracy of the proposed method.
Symmetric tensor / symmetric rank / decomposition / generating polynomial / catalectieant matrix
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Higher Education Press and Springer-Verlag GmbH Germany
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