Open AccessLorentzian approximations for a Lorentzian $ \alpha $-Sasakian manifold and Gauss-Bonnet theorems
Author(s) -
Haiming Liu,
Xiawei Chen,
Jianyun Guan,
ZU Pei-fu
Publication year - 2023
Publication title -
aims mathematics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 15
ISSN - 2473-6988
DOI - 10.3934/math.2023024
Subject(s) - gaussian curvature , manifold (fluid mechanics) , curvature , mathematics , mathematical analysis , geodesic , gauss–bonnet theorem , gauss , second fundamental form , mathematical physics , pure mathematics , physics , mean curvature , geometry , quantum mechanics , einstein , mechanical engineering , engineering