Friday, December 11th at 10:30, Alex Casarotti (University of Ferrara).

Title: Tangential weak defectiveness and generic identifiability
Abstract:  We study the uniqueness of decomposition of general tensors T as a sum of tensors of rank 1. This is done by extending the theory developed in a previous work by Mella to the framework of non-tangentially-weak-defective varieties. In particular, the infinitesimal behaviour of the tangential contact locus is linked to the birational geometry of a weakly defective but not tangentially defective variety. In this way it is possible to prove the non generic identifiability of infinitely many partially symmetric tensors.

The seminar will take place online. Click here for the Zoom link.