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math.OC2026
Geometry-Aware Langevin Sampling for Matrix-Valued Graph Learning
Papri Dey
Bayesian inference over positive semidefinite (PSD) matrix-valued parameters arises in structured covariance estimation, graph-Laplacian precision models, and multi-output graph le…
math.OC2026
Lorentzian Polynomials, Semipositive Cones, and Cone-Stable EVI Systems
Papri Dey
Lorentzian and completely log-concave polynomials have recently emerged as a unifying framework for negative dependence, log-concavity, and convexity in combinatorics and probabili…