Results 41 to 50 of about 1,196,150 (335)

Lorentzian homogeneous spaces admitting a homogeneous structure of type T1+T3

open access: yes, 2005
We show that a Lorentzian homogeneous space admitting a homogeneous structure of type T1 + T3 is either a (locally) symmetric space or a singular homogeneous plane wave.Comment: 7 pages, Latex2e, a small note and a reference ...
Ambrose   +7 more
core   +3 more sources

k-Dirac operator and parabolic geometries [PDF]

open access: yes, 2012
The principal group of a Klein geometry has canonical left action on the homogeneous space of the geometry and this action induces action on the spaces of sections of vector bundles over the homogeneous space.
A Čap   +12 more
core   +1 more source

On the Volume in Homogeneous Spaces [PDF]

open access: yesNagoya Mathematical Journal, 1959
Guldin-Pappus’s theorem about the volume of a solid of rotation in the euclidean space has been generalized in two ways. G. Koenigs [1] and J. Hadamard [2] proved that the volume generated by a 1-parametric motion of a surface D bounded by a closed curve c is equal to where are quantities attached to D with respect to a rectangular coordinate system ...
openaire   +2 more sources

On Ricci Curvature of a Homogeneous Generalized Matsumoto Finsler Space

open access: yesMathematics, 2023
The characterization of Finsler spaces with Ricci curvature is an ancient and cumbersome one. In this paper, we have derived an expression of Ricci curvature for the homogeneous generalized Matsumoto change.
Yanlin Li   +3 more
doaj   +1 more source

The graviton propagator in homogeneous and isotropic spacetimes [PDF]

open access: yes, 1987
We find the propagator for gravitons in spacetimes with homogeneous and isotropic flat (k=0) spatial sections. The method also applies to the k = + 1 and K = −1 cases.
Allen, B.
core   +2 more sources

On the product of homogeneous spaces

open access: yesTopology and its Applications, 1985
Within the class of Tikhonov spaces, and within the class of topological groups, most of the natural questions concerning ''productive closure'' of the subclasses of countably compact and pseudocompact spaces are answered by the following three well-known results: (1) [ZFC] There is a countably compact Tikhonov space X such that \(X\times X\) is not ...
Jan van Mill, W. Wistar Comfort
openaire   +2 more sources

Elementary approach to homogeneous C*-algebras [PDF]

open access: yes, 2012
A C*-algebra is n-homogeneous (where n is finite) if every its nonzero irreducible representation acts on an n-dimensional Hilbert space. An elementary proof of Fell's characterization of n-homogeneous C*-algebras (by means of their spectra) is presented.
Niemiec, Piotr
core   +1 more source

Harmonic analysis on a finite homogeneous space

open access: yes, 2007
In this paper, we study harmonic analysis on finite homogeneous spaces whose associated permutation representation decomposes with multiplicity. After a careful look at Frobenius reciprocity and transitivity of induction, and the introduction of three ...
Scarabotti, Fabio, Tolli, Filippo
core   +1 more source

Conjugate complex homogeneous spaces with non-isomorphic fundamental groups [PDF]

open access: yes, 2015
Let X=G/H be the quotient of a connected reductive algebraic C-group G defined over the field of complex numbers C by a finite subgroup H. We describe the topological fundamental group of the homogeneous space X, which is nonabelian when H is nonabelian.
Borovoi, Mikhail, Cornulier, Yves
core   +3 more sources

The homogeneous structure in a Cartan space

open access: yesLietuvos Matematikos Rinkinys, 2013
The homogeneus almost product structure on the Finsler space have Lieviu Popescu studied. In this paper we study the integrability conditions for the homogeneus product structure in Cartan space with Miron connection.
Edmundas Mazėtis
doaj   +1 more source

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