3 citations · 3 across the 1 of their papers we have counts for
3 papers
math.AG2020★ 3 cited
Linear Spaces of Symmetric Matrices with Non-Maximal Maximum Likelihood Degree
Kathlen Kohn, Rosa Winter, Yuhan Jiang
We study the maximum likelihood degree of linear concentration models in algebraic statistics. We relate the geometry of the reciprocal variety to that of semidefinite programming.…
math.AG2020
Bad Projections of the PSD Cone
Yuhan Jiang, Bernd Sturmfels
The image of the cone of positive semidefinite matrices under a linear map is a convex cone. Pataki characterized the set of linear maps for which that image is not closed. The Zar…
math.AG2019
Singularities and Genus of the k-Ellipse
Yuhan Jiang, Weiqiao Han
A k-ellipse is a plane curve consisting of all points whose distances from k fixed foci sum to a constant. We determine the singularities and genus of its Zariski closure in the co…