4 papers
Approximation and Interpolation of Singular Measures by Trigonometric Polynomials
Paul Catala, Mathias Hockmann, Stefan Kunis +1
Complex signed measures of finite total variation are a powerful signal model in many applications. Restricting to the -dimensional torus, finitely supported measures allow for…
Truncated moment problems on positive-dimensional algebraic varieties
Markus Wageringel
This manuscript transfers the main aspects of Prony's method from finitely-supported measures to the classes of signed or non-negative measures supported on algebraic varieties of…
Semi-algebraic properties of Minkowski sums of a twisted cubic segment
Arthur Bik, Adam Czapliński, Markus Wageringel
We find a semi-algebraic description of the Minkowski sum of copies of the bounded twisted cubic for each integer $n\ge…
Moment ideals of local Dirac mixtures
Alexandros Grosdos Koutsoumpelias, Markus Wageringel
In this paper we study ideals arising from moments of local Dirac measures and their mixtures. We provide generators for the case of first order local Diracs and explain how to obt…