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New integrability conditions of derivational equations of a submanifold in a generalized Riemannian space

Minčić Svetislav M. (Faculty of Science and Mathematics, Niš)
Velimirović Ljubica S. (Faculty of Science and Mathematics, Niš)
Stanković Mića S. (Faculty of Science and Mathematics, Niš)

The present work is a continuation of [5] and [6]. In [5] we have obtained derivational equations of a submanifold XM of a generalized Riemannian space GRN. Since the basic tensor in GRN is asymmetric and in this way the connection is also asymmetric, in a submanifold the connection is generally asymmetric too. By reason of this, we define 4 kinds of covariant derivative and obtain 4 kinds of derivational equations. In [6] we have obtained integrability conditions and Gauss-Codazzi equations using the 1st and the 2st kind of covariant derivative. The present work deals in the cited matter, using the 3rd and the 4th kind of covariant derivative. One obtains three new integrability conditions for derivational equations of tangents and three such conditions for normals of the submanifold, as the corresponding Gauss-Codazzi equations too.

Keywords: Generalized Riemannian space, submanifold, derivational formulas, integrability conditions