Abstract
The subtle distinction between hermitian sums of squares and sums of squares, regarded as positivity certificates of a polynomial restricted to a real algebraic variety, is analyzed on the simplest, yet very relevant, example: an ellipse.
Citation
Mihai Putinar. Claus Scheiderer. "Hermitian algebra on the ellipse." Illinois J. Math. 56 (1) 213 - 220, Spring 2012. https://doi.org/10.1215/ijm/1380287468
Information
