Results 51 to 60 of about 6,334,604 (358)
Elementary approach to homogeneous C*-algebras [PDF]
, 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
Non-Commutative Integration of the Dirac Equation in Homogeneous Spaces [PDF]
Symmetry, 2020 We develop a non-commutative integration method for the Dirac equation in homogeneous spaces. The Dirac equation with an invariant metric is shown to be equivalent to a system of equations on a Lie group of transformations of a homogeneous space.
A. Breev, A. Shapovalov
semanticscholar +1 more source
On the product of homogeneous spaces
Topology 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
k-Dirac operator and parabolic geometries [PDF]
, 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
The graviton propagator in homogeneous and isotropic spacetimes [PDF]
, 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
The homogeneous structure in a Cartan space
Lietuvos 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
Sphere and projective space of a C*-algebra with a faithful state
Demonstratio Mathematica, 2019 Let 𝒜 be a unital C*-algebra with a faithful state ϕ. We study the geometry of the unit sphere 𝕊ϕ = {x ∈ 𝒜 : ϕ(x*x) = 1} and the projective space ℙϕ = 𝕊ϕ/𝕋.
Antunez Andrea C.
doaj +1 more source
Modification and the cohomology groups of compact solvmanifolds Ⅱ
Electronic Research ArchiveIn this article, we refine the modification theorem for a compact solvmanifold given in 2006 and completely solve the problem of finding the cohomology ring on compact solvmanifolds.
Daniel Guan
doaj +1 more source
The unpredictably eruptive dynamics of spruce budworm populations in eastern Canada
Population Ecology, EarlyView.We examine historical population data for spruce budworm from several locations through the period 1930–1997, and use density‐dependent recruitment curves to test whether the pattern of population growth over time is more consistent with Royama's (1984; Ecological Monographs 54:429–462) linear R(t) model of harmonic oscillation at Green River New ...
Barry J. Cooke, Jacques Régnière
wiley +1 more source
Noncommutative spaces of worldlines
Physics Letters B, 2019 The space of time-like geodesics on Minkowski spacetime is constructed as a coset space of the Poincaré group in (3+1) dimensions with respect to the stabilizer of a worldline.
Angel Ballesteros +2 more
doaj +1 more source