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JOURNALS // Chebyshevskii Sbornik // Archive

Chebyshevskii Sb., 2022 Volume 23, Issue 1, Pages 142–152 (Mi cheb1160)

Integral manifolds of the first fundamental distribution $lcAC_S$-structure

A. R. Rustanova, E. A. Polkinab, G. V. Teplyakovac

a Institut of Digital Technologics and Modeling in Construction, National Research Moscow State University of Civil Engineering (Moscow)
b Institute of Physics, Technology and Informational Systems, Moscow State Pedagogical University (Moscow)
c Orenburg State University (Orenburg)

Abstract: In paper we consider aspects of the Hermitian geometry of $lcAC_S$structures. The effect of the vanishing of the Neyenhuis tensor and the associated tensors $N^{(1)}$, $N^{(2)}$, $N^{(3)}$, $N^{(4)}$ on the class of almost Hermitian structure induced on the first fundamental distribution of $lcAC_S$structures is investigated. It is proved that the almost Hermitian structure induced on integral manifolds of the first fundamental distribution: $lcAC_S $-manifolds is a structure of the class $W_2\oplus W_4$, and it will be almost Kähler if and only if $grad \ \sigma \subset L(\xi)$; an integrable $lcAC_S $-manifold is a structure of the class $W_4$; a normal $lcAC_S$-manifold is a Kähler structure; a $lcAC_S $-manifold for which $N^{(2)} (X,Y)=0$, or $N^{(3)} (X)=0$, or $N^{(4)} (X)=0$, is an almost Kähler structure in the Gray-Herwell classification of almost Hermitian structures.

Keywords: almost contact structures, almost Hermitian structures, integrability of structures, Neyenhuis tensor, normal structures.

UDC: 517

Received: 04.08.2021
Accepted: 27.02.2022

DOI: 10.22405/2226-8383-2022-23-1-142-152



© Steklov Math. Inst. of RAS, 2024