Results 11 to 20 of about 7,336 (96)

Affine Dependence of Network Observability/Controllability on Its Subsystem Parameters and Connections [PDF]

open access: yesIEEE Transactions on Systems, Man, and Cybernetics: Systems, 2019
This article investigates observability/controllability of a networked dynamic system (NDS) in which system matrices of its subsystems are expressed through linear fractional transformations (LFTs).
T. Zhou, Yu-yuan Zhou
semanticscholar   +1 more source

First integrals of affine connections and Hamiltonian systems of hydrodynamic type [PDF]

open access: yes, 2015
We find necessary and sufficient conditions for a local geodesic flow of an affine connection on a surface to admit a linear first integral. The conditions are expressed in terms of two scalar invariants of differential orders 3 and 4 in the connection ...
Felipe Contatto, M. Dunajski
semanticscholar   +1 more source

On a Metric Affine Manifold with Several Orthogonal Complementary Distributions

open access: yesMathematics, 2021
A Riemannian manifold endowed with k>2 orthogonal complementary distributions (called here an almost multi-product structure) appears in such topics as multiply twisted or warped products and the webs or nets composed of orthogonal foliations.
V. Rovenski, S. Stepanov
semanticscholar   +1 more source

On Limit Sets for Geodesics of Meromorphic Connections [PDF]

open access: yesJournal of dynamical and control systems, 2020
Meromorphic connections on Riemann surfaces originate and are closely related to the classical theory of linear ordinary differential equations with meromorphic coefficients.
Dmitry Novikov   +2 more
semanticscholar   +1 more source

Induced connections of two types on a surface of an affine space

open access: yesDifferential Geometry of Manifolds of Figures, 2019
In the affine space the fundamental-group connection in the bundle associated with a surface as a manifold of tangent planes is investigated. The principal bundle contains a quotient bundle of tangent frames, the typical fiber of which is a linear group ...
A. Shults
semanticscholar   +1 more source

The Mixed Scalar Curvature of Almost-Product Metric-Affine Manifolds, II

open access: yesResults in Mathematics, 2021
We continue our study of the mixed Einstein–Hilbert action as a functional of a pseudo-Riemannian metric and a linear connection. Its geometrical part is the total mixed scalar curvature on a smooth manifold endowed with a distribution or a foliation. We
V. Rovenski, Tomasz Zawadzki
semanticscholar   +1 more source

About the torsion tensor of an affine connection on two-dimensional and three-dimensional manifolds

open access: yesDifferential Geometry of Manifolds of Figures, 2021
The basis for this study of affine connections in linear frame bundle over a smooth manifold is the structure equations of the bundle. An affine connection is given in this bundle by the Laptev — Lumiste method. The differential equations are written for
K. Polyakova
semanticscholar   +1 more source

Symmetries of the Space of Linear Symplectic Connections [PDF]

open access: yes, 2016
There is constructed a family of Lie algebras that act in a Hamiltonian way on the symplectic affine space of linear symplectic connections on a symplectic manifold.
Daniel J. F. Fox
semanticscholar   +1 more source

Hermitian-Einstein connections on principal bundles over flat affine manifolds [PDF]

open access: yes, 2011
Let M be a compact connected special flat affine manifold without boundary equipped with a Gauduchon metric g and a covariant constant volume form. Let G be either a connected reductive complex linear algebraic group or the real locus of a split real ...
I. Biswas, John C. Loftin
semanticscholar   +1 more source

On the dimension of Lie algebrasof infinitesimal affine transformations of direct products of more than two spaces of affine connection of the first type

open access: yesDifferential Geometry of Manifolds of Figures
The theory of motions in generalized spaces is one of the directions in modern differential geometry. Such scientists as E. Cartan, P. K. Rashev­sky, P. A. Shirokov, I. P. Egorov, A.Ya. Sultanov and other scientists were engaged in the study of movements
M. V. Glebova, A. Sultanov
semanticscholar   +1 more source

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