Results 81 to 90 of about 71,118 (212)

On Brane Solutions Related to Non-Singular Kac-Moody Algebras

open access: yesSymmetry, Integrability and Geometry: Methods and Applications, 2009
A multidimensional gravitational model containing scalar fields and antisymmetric forms is considered. The manifold is chosen in the form M = M_0 × M_1 × ... × M_n, where M_i are Einstein spaces (i ≥ 1).
Vladimir D. Ivashchuk   +1 more
doaj   +1 more source

Ends of Hyperbolic 3-Manifolds [PDF]

open access: yesJournal of the American Mathematical Society, 1993
Let N = H 3 / Γ N = {{\mathbf {H}}^3}/\Gamma be a hyperbolic 3 3 -manifold which is homeomorphic to the interior of a compact 3 3 -manifold.
openaire   +1 more source

Tubes in complex hyperbolic manifolds

open access: yesTransactions of the American Mathematical Society
We prove a tubular neighborhood theorem for an embedded complex geodesic in a complex hyperbolic 2-manifold where the width of the tube depends only on the Euler characteristic χ \chi of the embedded complex geodesic. We give an explicit estimate for this width. We supply two applications of the tubular neighborhood theorem. The first
Basmajian, Ara, Kim, Youngju
openaire   +2 more sources

Harmonic-hyperbolic geometric flow

open access: yesElectronic Journal of Differential Equations, 2017
In this article we study a coupled system for hyperbolic geometric flow on a closed manifold M, with a harmonic flow map from M to some closed target manifold N. Then we show that this flow has a unique solution for a short-time.
Shahroud Azami
doaj  

Singularly perturbed semilinear Neumann problem with non-normally hyperbolic critical manifold

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2010
In this paper, we investigate the problem of existence and asymptotic behavior of the solutions for the nonlinear boundary value problem \begin{eqnarray*} \epsilon y''+ky=f(t,y),\quad t\in\langle a,b \rangle, \quad k>0,\quad ...
Robert Vrabel
doaj   +1 more source

Hyperbolic three-manifolds that embed geodesically

open access: yes, 2016
We prove that every complete finite-volume hyperbolic 3-manifold $M$ that is tessellated into right-angled regular polyhedra (dodecahedra or ideal octahedra) embeds geodesically in a complete finite-volume connected orientable hyperbolic 4-manifold $W ...
Martelli, Bruno
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