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math.AG2026
Root bounds of vertical systems using tropical geometry
Elisenda Feliu, Paul Alexander Helminck, Oskar Henriksson +3
Sparse polynomial systems with vertical coefficient dependencies arise naturally when describing the critical points of optimization problems and, when augmented with linear forms,…
math.AG2025
Moment varieties of the inverse Gaussian and gamma distributions are nondefective
Oskar Henriksson, Kristian Ranestad, Lisa Seccia +1
We show that the parameters of a -mixture of inverse Gaussian or gamma distributions are algebraically identifiable from the first moments, and rationally identifiable fr…
math.AG2024
Moment varieties from inverse Gaussian and gamma distributions
Oskar Henriksson, Lisa Seccia, Teresa Yu
Motivated by previous work on moment varieties for Gaussian distributions and their mixtures, we study moment varieties for two other statistically important two-parameter distribu…