The deformation pseudotensor of connections in co­congruence K (n - m)m

Author:

Belova O. O.1ORCID

Affiliation:

1. Immanuel Kant Baltic Federal University

Abstract

The Grassmann manifold is the set of all -dimensional planes of an -dimensional projective space, with dim. One of the submanifolds of the Grassmann manifold is a complex of -planes if the dimension of the complex exceeds the difference . We continue to study the cocongruence of -dimensional planes us­ing the Cartan — Laptev method. In an -dimensional projective space, the cocongruence of -dimensional planes can be given by the following equations . Compositional equipment of a given cocongruence by fields of ()-planes : and points allows one to define connections of three types in the associated bundle, and one of the three connections is average with respect to the other two. The deformation of these connections is considered and it is shown that the object of deformation is a pseudotensor. We introduce the deformation object of the connection of the sec­ond type with respect to the connection of the first type. The deformation of the connection of the third type with respect to the connection of the first type is , and the deformation of the connection of the third type with respect to the connection of the second type is . In the present paper, we use the method of continuations and cover­ages of G. F. Laptev with assignment of connections in the principal bun­dle.

Publisher

Immanuel Kant Baltic Federal University

Subject

Geology,Ocean Engineering,Water Science and Technology

Reference18 articles.

1. 1. Akivis, M. A., Rosenfeld, B. A.: Eli Cartan (1869—1951). Moscow (2014).

2. 2. Belova, O. O.: Differential geometry of (n-m)m-dimensional com­plexes in n-dimensional projective space // Itogi Nauki i Tekhn. Sovrem. Math. and its App. Theme Reviews, 220, 17—27 (2023).

3. 3. Bliznikas, V. I.: Some problems in the geometry of hypercomplexes of lines // Tr. Geom. Sem. 6, 43—111 (1974).

4. 4. Borisenko, A. A., Nikolaevskii, Yu. A.: Grassmann manifolds and the Grassmann image of submanifolds. Russian Math. Surveys, 46:2, 45—94 (1991).

5. 5. Guseva, O. O.: Rectilinear congruences with a focal surface degen­erating into a line. DGMF, 24, 46—48 (1993).

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