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Article Dans Une Revue SIAM Journal on Applied Algebra and Geometry Année : 2022

On tensors that are determined by their singular tuples

Résumé

In this paper we study the locus of singular tuples of a complex valued multisymmetric tensor. The main problem that we focus on is: given the set of singular tuples of some general tensor, which are all the tensors that admit those same singular tuples. Assume that the triangular inequality holds, that is exactly the condition such that the dual variety to the Segre-Veronese variety is an hypersurface, or equivalently, the hyperdeterminant exists. We show in such case that, when at least one component has degree odd, this tensor is projectively unique. On the other hand, if all the degrees are even, the ber is an 1-dimensional space.
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Dates et versions

hal-03193911 , version 1 (09-04-2021)

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Ettore Turatti. On tensors that are determined by their singular tuples. SIAM Journal on Applied Algebra and Geometry, 2022, 6 (2), pp.319-338. ⟨10.1137/21M1412980⟩. ⟨hal-03193911⟩
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