# Wydawnictwa / Banach Center Publications / Wszystkie tomy

## Deformations of structures, embedding of a Riemannian manifold in a Kählerian one and geometric antigravitation

### Tom 76 / 2007

Banach Center Publications 76 (2007), 505-514 MSC: 53C15, 53C26, 53C21. DOI: 10.4064/bc76-0-26

#### Streszczenie

Tubular neighborhoods play an important role in modern differential topology. The main aim of the paper is to apply these constructions to geometry of structures on Riemannian manifolds. Deformations of tensor structures on a normal tubular neighborhood of a submanifold in a Riemannian manifold are considered in section 1. In section 2, this approach is used to obtain a Kählerian structure on the corresponding normal tubular neighborhood of the null section in the tangent bundle $TM$ of a smooth manifold $M$. In section 3, we consider a new deformation of a tensor structure on some neighborhood of a curve and introduce the so-called geometric antigravitation. Some results of the paper were announced in [4], [5]. The work [3] is close to our discussion.

#### Autorzy

• Alexander A. ErmolitskiChair of Mathematics
Belorussian State Pedagogical University
Sovietskaya 18
Minsk 220050, Belarus
e-mail

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