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On partial and generic uniqueness of block term tensor decompositions

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arxiv 1301.0920 v1 pith:C26T4NUB submitted 2013-01-05 math.AG

On partial and generic uniqueness of block term tensor decompositions

classification math.AG
keywords decompositionstensoruniquenessblockconditionsdefectivegenericjoins
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We present several conditions for generic uniqueness of tensor decompositions of multilinear rank (1,L_{1}, L_{1}),..., (1, L_{R}, L_{R}) terms. In geometric language, we prove that the joins of relevant subspace varieties are not tangentially weakly defective. We also give conditions for partial uniqueness of block term tensor decompositions by proving that the joins of relevant subspace varieties are not defective.

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