5 citations · 5 across the 8 of their papers we have counts for
6 papers · 1 filter
Polynomials with Lorentzian Signature, and Computing Permanents via Hyperbolic Programming
Papri Dey
We study the class of polynomials whose Hessians evaluated at any point of a closed convex cone have Lorentzian signature. This class is a generalization to the remarkable class of…
Real degeneracy loci of matrices and phase retrieval
Papri Dey, Dan Edidin
Let be a collection of linear operators on . The degeneracy locus of is defined as the set of points $x \in {\m…
The orthostochastic variety
Justin Chen, Papri Dey
Orthostochastic matrices are the entrywise squares of orthogonal matrices, and naturally arise in various contexts, including notably definite symmetric determinantal representatio…
Conic stability of polynomials and positive maps
Papri Dey, Stephan Gardoll, Thorsten Theobald
Given a proper cone , a multivariate polynomial is called -stable if it does not have a root whose…
Testing hyperbolicity of real polynomials
Papri Dey, Daniel Plaumann
Hyperbolic polynomials are real multivariate polynomials with only real roots along a fixed pencil of lines. Testing whether a given polynomial is hyperbolic is a difficult task in…
Coordinate-wise Powers of Algebraic Varieties
Papri Dey, Paul Görlach, Nidhi Kaihnsa
We introduce and study coordinate-wise powers of subvarieties of , i.e. varieties arising from raising all points in a given subvariety of to the -t…