Semi-riemannian submersions with totally umbilic fibres
نویسندگان
چکیده
منابع مشابه
On totally umbilic submanifolds of semi-Riemannian manifolds
The notion of being totally umbilic is considered for non-degenerate and degenerate submanifolds of semi-Riemanian manifolds. After some remarks on the general case, timelike and lightlike totally umbilic submanifolds of Lorentzian manifolds are discussed, along with their physical interpretation in view of general relativity. In particular, the mathematical notion of totally umbilic submanifol...
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ژورنال
عنوان ژورنال: Rendiconti del Circolo Matematico di Palermo
سال: 2002
ISSN: 0009-725X,1973-4409
DOI: 10.1007/bf02871654