Results 21 to 30 of about 6,334,604 (358)

On the Geometry of Three-dimensional Pseudo-Riemannian Homogeneous Spaces. I [PDF]

open access: yesИзвестия Саратовского университета. Новая серия. Серия Математика. Механика. Информатика, 2020
The problem of establishing links between the curvature and the topological structure of a manifold is one of the important problems of geometry. In general, the purpose of the research of manifolds of various types is rather complicated.
Natal’ya Pavlovna Mozhey
doaj   +1 more source

A compact homogeneous S-space

open access: yesTopology and its Applications, 2004
6 ...
Ramiro de la Vega, Kenneth Kunen
openaire   +3 more sources

Canonical Structure of Locally Homogeneous Systems on Compact Closed 3-Manifolds of Types $E^3$, Nil and Sol [PDF]

open access: yes, 1997
In this paper we investigate the canonical structure of diffeomorphism invariant phase spaces for spatially locally homogeneous spacetimes with 3-dimensional compact closed spaces.
H. Kodama, Scott
core   +2 more sources

Hausdorff operators on homogeneous spaces of locally compact groups

open access: yesЖурнал Белорусского государственного университета: Математика, информатика, 2020
Hausdorff operators on the real line and multidimensional Euclidean spaces originated from some classical summation methods. Now it is an active research area. Hausdorff operators on general groups were defined and studied by the author since 2019.
Adolf R. Mirotin
doaj   +1 more source

A GKM description of the equivariant cohomology ring of a homogeneous space [PDF]

open access: yes, 2001
Let T be a torus of dimension n > 1 and M a compact T-manifold. M is a GKM manifold if the set of zero dimensional orbits in the orbit space M/T is zero dimensional and the set of one dimensional orbits in M/T is one dimensional.
V. Guillemin, T. Holm, Catalin Zara
semanticscholar   +1 more source

A homogeneous space whose complement is rigid [PDF]

open access: yes, 2014
We construct a homogeneous subspace of $2^\omega$ whose complement is dense in $2^\omega$ and rigid. Using the same method, assuming Martin's Axiom, we also construct a countable dense homogeneous subspace of $2^\omega$ whose complement is dense in $2 ...
Medini, Andrea   +2 more
core   +1 more source

Integrators on homogeneous spaces: Isotropy choice and connections [PDF]

open access: yes, 2016
We consider numerical integrators of ODEs on homogeneous spaces (spheres, affine spaces, hyperbolic spaces). Homogeneous spaces are equipped with a built-in symmetry. A numerical integrator respects this symmetry if it is equivariant.
Munthe-Kaas, Hans, Verdier, Olivier
core   +1 more source

On completely homogeneous c-spaces

open access: yesHeliyon, 2020
In this paper we determine completely homogeneous c-spaces. Various properties of completely homogeneous c-spaces are discussed. Relation between completely homogeneous c-space and hereditary homogeneous c-space is studied.
P. Sini
doaj   +1 more source

On Homogeneous Finite-Time Control for Linear Evolution Equation in Hilbert Space

open access: yesIEEE Transactions on Automatic Control, 2018
Based on the notion of generalized homogeneity, a new algorithm of feedback control design is developed for a plant modeled by a linear evolution equation in a Hilbert space with a possibly unbounded operator. The designed control law steers any solution
A. Polyakov, J. Coron, L. Rosier
semanticscholar   +1 more source

Homogenisation on homogeneous spaces [PDF]

open access: yesJournal of the Mathematical Society of Japan, 2018
52 pages, to appear: Journal of the Mathematical Society of Japan.
openaire   +7 more sources

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