One of the methods to obtain Frobenius manifold structures is via DGBV (differential Gerstenhaber-Batalin-Vilkovisky) algebra construction. An important problem is how to identify Frobenius manifold structures constructed from two different DGBV algebras. For DGBV algebras with suitable conditions, we show the functorial property of a construction of deformations of the multiplicative structure...

This paper aims to present work on contact pseudo-slant submanifolds of Para-Sasakian manifold. The study includes the definitions and some results type 1, 2, 3 submanifolds.

between malpractice claims and adverse events due to negligence. N Engl J Med 1991;325:245–251. 6. Rolph JE, Kravitz RL, McGuigan K. Malpractice claims data as a quality improvement tool. Is targeting effective? JAMA 1991; 266:2093–2097. 7. Institute of Medicine. To err is human: building a safer health system. Washington, DC: National Academy Press, 2000. 8. Levinson W, Roter DL, Mullooly JP, ...

Three types of Riemannian submersions whose total space is an almost Hermitian almost contact metric manifold are studied. The study is focused on fundamental properties and the transference of structures. 1. Introduction. In this paper, we discuss some geometric properties of Riemannian submersions whose total space is an almost Hermitian almost contact metric manifold. If the base space is an...

In this paper we study relations for the covariant derivative of O?Neill?s tensor fields, Riemannian curvature, Ricci curvature and scalar submersion from a manifold with respect to new type semi-symmetric non-metric connection manifold, respectively, demonstrate relationship between them.

commutative properties of four-dimensional generalized symmetric pseudo-riemannian manifolds were considered. specially, in this paper, we studied skew-tsankov and jacobi-tsankov conditions in 4-dimensional pseudo-riemannian generalized symmetric manifolds.

We give geometric constructions leading to analytically controlled Poincaré complexes in the sense of the previous paper. In the case of a complete Riemannian manifold we identify the signature of the associated complex with the coarse index of the signature operator. Mathematics Subject Classifications (2000): 19J25, 19K99.