2008/09/29 by A. G. Kremlyov, Kremlyov, A. G., Yu. G. Nikonorov +1
Mathematics · Physics and Astronomy · #53C20 #Advanced Differential Geometry Research #Differential Geometry (math.DG) #FOS: Mathematics #Geometric Analysis and Curvature Flows #Geometry and complex manifolds
paper · pdf · doi:10.48550/arxiv.0809.4908
openalex publication_date 2008/09/29 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
In this paper, we present the classification of all possible signatures of the Ricci curvature of left-invariant Riemannian metrics on 4-dimensional Lie groups and discuss some related questions.