Nicolescu, Liviu (2005)
Balkan Journal of Geometry and its Applications (BJGA)
Similarity:
Keli Zheng, Liangyun Chen, Yongzheng Zhang (2014)
Colloquium Mathematicae
Similarity:
This paper is primarily concerned with pseudo-Riemannian superalgebras, which are superalgebras endowed with pseudo-Riemannian non-degenerate supersymmetric consistent bilinear forms. Decompositions of pseudo-Riemannian superalgebras whose left centers are isotropic and whose left centers are not isotropic are investigated.
Wiesław Grycak, Marian Hotloś (1982)
Colloquium Mathematicae
Similarity:
Jan Peleska (1984)
Aequationes mathematicae
Similarity:
Gadea, P. M., Oubiña, J. A. (2003)
International Journal of Mathematics and Mathematical Sciences
Similarity:
Chuan-Chih, Mugridge, Larry R. Hsiung (1971)
Mathematische Zeitschrift
Similarity:
Neculai Papaghiuc (2001)
Colloquium Mathematicae
Similarity:
We consider a certain pseudo-Riemannian metric G on the tangent bundle TM of a Riemannian manifold (M,g) and obtain necessary and sufficient conditions for the pseudo-Riemannian manifold (TM,G) to be Ricci flat (see Theorem 2).
Andrzej Derdziński (1978)
Colloquium Mathematicae
Similarity:
Bayram Ṣahin (2011)
Annales Polonici Mathematici
Similarity:
We give necessary and sufficient conditions for Riemannian maps to be biharmonic. We also define pseudo-umbilical Riemannian maps as a generalization of pseudo-umbilical submanifolds and show that such Riemannian maps put some restrictions on the target manifolds.
Norio Hashimoto, Masami Sekizawa (2000)
Archivum Mathematicum
Similarity:
An explicit classification of the spaces in the title is given. The resulting spaces are locally products or locally warped products of the real line and two-dimensional spaces of constant curvature.
Bercu, Gabriel (2006)
Balkan Journal of Geometry and its Applications (BJGA)
Similarity:
Niels Jacob (1992)
Forum mathematicum
Similarity:
Catalano, D.A. (2006)
International Journal of Mathematics and Mathematical Sciences
Similarity: