225 citations · 542 across the 32 of their papers we have counts for
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math.FA2024
The convex algebraic geometry of higher-rank numerical ranges
Jonathan Nino-Cortes, Cynthia Vinzant
The higher-rank numerical range is a convex compact set generalizing the classical numerical range of a square complex matrix, first appearing in the study of quantum error correct…
math.CO2024
Tropicalizing Principal Minors of Positive Definite Matrices
Abeer Al Ahmadieh, Felipe Rincón, Cynthia Vinzant +1
We study the tropicalization of the image of the cone of positive definite matrices under the principal minors map. It is a polyhedral subset of the set of -concave functions on…
math.NA2024
A semidefinite programming characterization of the Crawford number
Shmuel Friedland, Cynthia Vinzant
We give a semidefinite programming characterization of the Crawford number. We show that the computation of the Crawford number within precision is computable in poly…