Results 31 to 40 of about 14,983 (246)
Anti-de Sitter boundary in Poincare coordinates [PDF]
, 2007 We study the space-time boundary of a Poincare patch of Anti-de Sitter (AdS) space. We map the Poincare AdS boundary to the global coordinate chart and show why this boundary is not equivalent to the global AdS boundary.
C. A. Ballón Bayona +19 more
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DILUTING GRAVITY WITH COMPACT HYPERBOLOIDS [PDF]
COSMO-2000, 2001 I give a brief informal introduction to the idea and tests of large extra dimensions, focusing on the case in which the space-time manifold has a direct product structure. I then describe some attractive implementations in which the internal space comprises a compact hyperbolic manifold.
openaire +2 more sources
STUDENTS' APPROACHES ON WARPED SURFACE
Journal of Industrial Design and Engineering Graphics, 2019 The geometric challenges in the architectural design of warped surface come mainly from the physical materialization. This paper presents structural forms based on warped surface and shows the types of structures made during the 20th and 21st century ...
Ana-Maria GRAUR +2 more
doaj +4 more sources
Вестник Дагестанского государственного технического университета: Технические науки, 2019 Objectives The purpose of the study is to obtain an expression for determining the coordinates of the earthquake focus using the ellipsoid method, as well as testing the possibility of using the method using the figures of the second order of the ...
T. G. Aslanov, U. A. Musaeva
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Contributions to Four-Position Theory with Relative Rotations [PDF]
, 2009 We consider the geometry of four spatial displacements, arranged in cyclic order, such that the relative motion between neighbouring displacements is a pure rotation.
Schröcker, Hans-Peter
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Hyperboloidal approach to quasinormal modes [PDF]
Frontiers in PhysicsOscillations of black hole spacetimes exhibit divergent behavior near the bifurcation sphere and spatial infinity. In contrast, these oscillations remain regular when evaluated near the event horizon and null infinity. The hyperboloidal approach provides a natural framework to bridge these regions smoothly, resulting in a geometric regularization of ...
Panosso Macedo, Rodrigo +1 more
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Hyperboloidal data and evolution [PDF]
AIP Conference Proceedings, 2006 11 pages, 9 figures.
Husa, S. +3 more
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METHODS FOR SOLVING THE INTERSECTION OF ROTATION AREAS WITH STRAIGHT LINES
Journal of Industrial Design and Engineering Graphics, 2015 Given the frequent practical use of rotation areas, the paper proposes to study the methods for solving and determining the intersection of these rotation areas with various pipes, assimilated to the straight line.
Sanda Bodea, Magdalena Orban
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The hyperboloidal foliation method [PDF]
, 2014 The Hyperboloidal Foliation Method presented in this monograph is based on a (3+1)-foliation of Minkowski spacetime by hyperboloidal hypersurfaces. It allows us to establish global-in-time existence results for systems of nonlinear wave equations posed on a curved spacetime and to derive uniform energy bounds and optimal rates of decay in time.
LeFloch, Philippe G., Ma, Yue
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Inflationary solutions in the brane-world and their geometrical interpretation [PDF]
, 2000 We consider the cosmology of a pair of domain walls bounding a five-dimensional bulk space-time with negative cosmological constant, in which the distance between the branes is not fixed in time.
A. H. Taub +45 more
core +3 more sources