Exceptional points (EPs) are unique types of energy-level degeneracies that occur in non-Hermitian systems. Since their ...

Positive definite matrices are widely used in machine learning and probabilistic modeling, especially in applications related to graph analysis and Gaussian models. It is not uncommon that positive ...

In this work, utilizing Riemannian geometric principles, we propose coordinate-descent algorithms on the Riemannian manifold of symmetric positive definite (SPD) matrices. We further identify a broad ...