Astrophysical-dynamics application of L0 principal-component analysis and matrix norms. The stellar velocity-dispersion tensor σ²_{ij} = ⟨(v_i−⟨v_i⟩)(v_j−⟨v_j⟩)⟩ is a symmetric positive-semidefinite 3×3 matrix whose spectral decomposition…
Astrophysical-dynamics application of L0 principal-component analysis and matrix norms. The stellar velocity-dispersion tensor σ²_{ij} = ⟨(v_i−⟨v_i⟩)(v_j−⟨v_j⟩)⟩ is a symmetric positive-semidefinite 3×3 matrix whose spectral decomposition…