• Best rank-k approximations for tensors: generalizing Eckart-Young 

      Tocino Sánchez, Alicia (2020-02-03)
      Joint work with Jan Draisma and Giorgio Ottaviani. Given a tensor f in a Euclidean tensor space, we are interested in the critical points of the distance function from f to the set of tensors of rank at most k, which we ...