Abstract for the talk on 15.06.2021 (10:00 h)

Seminar on Nonlinear Algebra

Fulvio Gesmundo (MPI MIS, Leipzig)
Tensor network methods for computing the spectral norm of symmetric tensors

It is a classical fact that the sequence of powers of a symmetric matrix converges, up to scaling, to the orthogonal projection onto the eigenspace determined by its largest eigenvalue. We explore analogous statements for symmetric tensors, where the matrix powering operation is replaced by tensor contractions encoded by the combinatorics of a graph. I will discuss some positive and negative recent results in this direction. This is joint work with A. Uschmajew.

Physical attendance in seminars is restricted to 15 participants. Unfortunately this max. number of allowed participants is reached.

17.06.2021, 00:10