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Turkish Journal of Mathematics

DOI

10.55730/1300-0098.3518

Abstract

We show that statistical and semi-Weyl structures with torsion are invariant under conformal-projective transformations. We prove that a nondegenerate submanifold of a semi-Weyl (respectively, statistical) manifold with torsion is also a semi-Weyl (respectively, statistical) manifold with torsion, and that the induced structures of two conformal-projective equivalent semi-Weyl (respectively, statistical) structures with torsion on a manifold to a nondegenerate submanifold, are conformal-projective equivalent, too. Also, we prove that the umbilical points of a nondegenerate hypersurface in a semi-Weyl manifold with torsion are preserved by conformal-projective changes. Then we consider lightlike hypersurfaces of semi-Weyl manifolds with torsion and we describe similarities and differences with respect to the nondegenerate hypersurfaces. Finally, we show that a semi-Weyl manifold with torsion can be realized by a nondegenerate affine distribution.

Keywords

conformal-projective transformation, dual and semidual connections, semi-Weyl structure, Statistical structure

First Page

448

Last Page

468

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