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math.ST2021
Symmetries in Directed Gaussian Graphical Models
Visu Makam, Philipp Reichenbach, Anna Seigal
We define Gaussian graphical models on directed acyclic graphs with coloured vertices and edges, calling them RDAG (restricted directed acyclic graph) models. If two vertices or ed…
math.RT2021
Principal Components along Quiver Representations
Anna Seigal, Heather A. Harrington, Vidit Nanda
Quiver representations arise naturally in many areas across mathematics. Here we describe an algorithm for calculating the vector space of sections, or compatible assignments of ve…