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arXiv · 1110.6367

Grassmann secants, identifiability, and linear systems of tensors

Edoardo Ballico·Alessandra Bernardi·Maria Virginia Catalisano·Luca Chiantini
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Abstract

For any irreducible non-degenerate variety $X\subset \mathbb{P}^r$, we give a criterion for the $(k,s)$-identifiability of $X$. If $k\leq s-1 <r$, then the $(k,s)$-identifiability holds for $X$ if and only if the $s$-identifiability holds for the Segre product $Seg(\mathbb{P}^k\times X)$. Moreover, if the $s$-th secant variety of $X$ is not defective and it does not fill the ambient space, then we can produce a family of pairs $(k,s)$ for which the $(k,s)$-identifiability holds for $X$.

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Edoardo Ballico, Alessandra Bernardi, Maria Virginia Catalisano, Luca Chiantini. 2011-10-28. Grassmann secants, identifiability, and linear systems of tensors. https://doi.org/10.1016/j.laa.2012.07.045

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