2 citations · 2 across the 2 of their papers we have counts for
2 papers
math.AG2008★ 2 cited
Stability of Quadratic Modules
Tim Netzer
A finitely generated quadratic module or preordering in the real polynomial ring is called stable, if it admits a certain degree bound on the sums of squares in the representation…
math.AG2008
Positive Polynomials and Sequential Closures of Quadratic Modules
Tim Netzer
Let S be a basic closed semi-algebraic set in R^n and P the corresponding preordering in R[X_1,...,X_n]. We examine for which polynomials f there exist identities f+\ep q \in P for…