7 citations · 10 across the 14 of their papers we have counts for
15 papers
Noether's theorem for the conditional principle of least action
S. L. Lyakhovich, S. B. Sayapin, I. A. Zubareva
We consider the problem of a conditional extremum of an action in a class of fields constrained by differential equations. For this setup, we propose an extension of Noether's firs…
Sub-Lorentzian geodesics on with the generating space of Hermitian matrices in the Lie algebra
Valera Berestovskii, Irina Zubareva
The Lie subgroup of all matrices in the Lie group with positive real determinant is equipped with a left-invariant sub-Lorentz…
Abnormal extremals of left-invariant sub-Finsler quasimetrics on four-dimensional Lie groups with three-dimensional generating distributions
Valera Berestovskii, Irina Zubareva
We find three-dimensional subspaces of four-dimensional connected Lie algebras, generating these algebras, and abnormal extremals on connected Lie groups with these Lie algebras an…
Abnormal extremals of left-invariant sub-Finsler quasimetrics on four-dimensional Lie groups
Valera Berestovskii, Irina Zubareva
Abnormal extremals on four-dimensional connected Lie groups with left-invariant sub-Finsler quasimetric, defined by a seminorm on a two-dimensional subspace of the Lie algebra gene…
Extremals of a left-invariant sub-Finsler quasimetric on the Cartan group
Valera Berestovskii, Irina Zubareva
Using the Pontryagin Maximum Principle for the time-optimal problem in coordinates of the first kind, we find extremals of abitrary left-invariant sub-Finsler quasimetric on the Ca…
Extremals of a left-invariant sub-Finsler metric on the Engel group
Valera Berestovskii, Irina Zubareva
The authors found extremals of arbitrary left-invariant sub-Finsler metric on the Engel group defined by a distribution of rank two. They use for this the Pontryagin Maximum Princi…
Pontryagin maximum principle, (co)adjoint representation, and normal geodesics of left-invariant (sub-)Finsler metrics on Lie groups
Valera Berestovskii, Irina Zubareva
On the ground of origins of the theory of Lie groups and Lie algebras, their (co)adjoint representations, and the Pontryagin maximum principle for the time-optimal problem are give…
The spectrum of the Laplace operator on connected compact simple rank four Lie groups. I
Irina Zubareva
In this paper are given explicit calculations of Laplace operator spectrum for smooth real/complex-valued functions on all connected compact simple rank four Lie groups with biinva…
The spectrum of the Laplace operator on connected compact simple rank three Lie groups
Valera Berestovskii, Irina Zubareva, Victor Svirkin
In this paper are given explicit calculations of Laplace operator spectrum for smooth real/complex-valued functions on all connected compact simple rank three Lie groups with biinv…
Geodesics and shortest arcs of special sub-Riemannian metric on the Lie group
V. Berestovskii, I. Zubareva
The authors found geodesics, shortest arcs, cut loci, and conjugate sets for left-invariant sub-Riemannian matric on the Lie group , which is right-invariant relative to the…
Sub-Riemannian distance on the Lie group
V. Berestovskii, I. Zubareva
A left-invariant sub-Riemannian metric on the shortened Lorentz group under the condition that is right-invariant relative to the orthogonal Lie subgroup $1\oti…
Sub-Riemannian distance on Lie groups and
V. Berestovskii, I. Zubareva
The authors compute distances between arbitrary elements of Lie groups SU(2) and SO(3) for special left-invariant sub-Riemannian metrics and . To compute distances for the s…
(Locally) shortest arcs of special sub-Riemannian metric on the Lie group SO(3)
Valera Berestovskii, Irina Zubareva
The authors find geodesics, shortest arcs, diameter, cut locus, and conjugate sets for left-invariant sub-Riemannian metric on the Lie group SO(3), under condition that the metric…
(Locally) shortest arcs of special sub-Riemannian metric on the Lie group
Valera Berestovskii
The author finds geodesics, shortest arcs, cut locus, and conjugate sets for left-invariant sub-Riemannian metric on the Lie group under the condition that the metric i…
Correct observer's event horizon in de Sitter space-time
Valera Berestovskii, Irina Zubareva
A correct description of the past and the future event horizons for timelike geodesics in de Sitter space-time of the first kind is given.