### A Tale of Two Theorems

- Series
- Algebra Seminar
- Time
- Monday, March 4, 2013 - 15:00 for 1 hour (actually 50 minutes)
- Location
- Skiles 005
- Speaker
- Greg Blekherman – Georgia Tech

I will explain and draw
connections between the following two theorems: (1) Classification of
varieties of minimal degree by Del Pezzo and Bertini and (2)
Hilbert's
theorem on nonnegative polynomials and sums of squares. This will result
in the classification of all varieties on which nonnegative polynomials
are equal to sums of squares. (Joint work with Greg Smith and Mauricio
Velasco)