10 citations · 14 across the 5 of their papers we have counts for
4 papers · 1 filter
Pure states, nonnegative polynomials and sums of squares
Sabine Burgdorf, Claus Scheiderer, Markus Schweighofer
In recent years, much work has been devoted to a systematic study of polynomial identities certifying strict or non-strict positivity of a polynomial on a basic closed semialgebrai…
A Gröbner basis proof of the flat extension theorem for moment matrices
Markus Schweighofer
This paper has been withdrawn by the author since in Lemma 2 is in general not a subspace.
Iterated rings of bounded elements: Erratum
Markus Schweighofer
We close a gap appearing at the same time in the author's thesis "Iterated rings of bounded elements and generalizations of Schmüdgen's theorem" [1] and in the author's article "It…
A criterion for membership in archimedean semirings
Markus Schweighofer
We prove an extension of the classical Real Representation Theorem (going back to Krivine, Stone, Kadison, Dubois and Becker and often called Kadison-Dubois Theorem). It is a crite…