Fulvio Gesmundo (University of Copenhagen)
Thursday, March 26, 2020 - 17:00
MPI für Mathematik in den Naturwissenschaften Leipzig
 ,    , Videobroadcast, 3. Etage
The border rank of a tensor generalizes the rank of a matrix and provides a measure of the complexity of the associated bilinear map. We present some recent results on the behaviour of border rank under two different notions of tensor product. The first one, the Segre product, offers a completely geometric framework; the second one, the Kronecker product, is related to the geometry of the matrix multiplication tensor. We highlight similarities and differences between the two settings.
submitted by Saskia Gutzschebauch (Saskia.Gutzschebauch@mis.mpg.de, 0341 9959 50)