29 citations · 215 across the 37 of their papers we have counts for
Showing 2015Show all
3 papers · 1 filter
math.NT2015★ 3 cited
Eigenvalues of symmetric matrices over integral domains
Mario Kummer
Given an integral domain A we consider the set of all integral elements over A that can occur as an eigenvalue of a symmetric matrix over A. We give a sufficient criterion for bein…
math.AG2015★ 14 cited
Real Fibered Morphisms and Ulrich Sheaves
Mario Kummer, Eli Shamovich
In this paper we define and study real fibered morphisms. Such morphisms arise in the study of real hyperbolic hypersurfaces in projective space and other hyperbolic varieties. We…
math.AG2015★ 5 cited
Two results on the size of spectrahedral descriptions
Mario Kummer
A spectrahedron is a set defined by a linear matrix inequality. Given a spectrahedron we are interested in the question of the smallest possible size of the matrices in the des…