Sonderseminar: The cone of nonnegative biquadratics in (3,3)-variables

Dienstag, 28. März 2023
10 bis 11:30 Uhr


Veranstaltet von
Claus Scheiderer

Vortragende Person/Vortragende Personen:
Rainer Sinn

We study the cone of nonnegative biquadratics in (3,3)-variables
using the cone of nonnegative ternary sextics. Writing a
biquadratic as a quadratic form in one pair of the variables
allows to take the determinant of a 3x3 Gram matrix to obtain
a ternary sextic. We exploit this subtle connection to analyze
a problem arising in the context of PDEs (in material sciences).