Experimental validation of the mechanical coupling response for hygro-thermally curvature-stable laminated composite materials [PDF]
, 2011 Stacking sequence configurations for hygro-thermally curvature-stable (HTCS) laminates have recently been identified in 9 classes of coupled laminate with standard ply angle orientations +45, "1245, 0 and ...
Shamsudin, M.H. +3 more
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WEYL COLLINEATIONS THAT ARE NOT CURVATURE COLLINEATIONS [PDF]
International Journal of Modern Physics D, 2005 Though the Weyl tensor is a linear combination of the curvature tensor, Ricci tensor and Ricci scalar, it does not have all and only the Lie symmetries of these tensors since it is possible, in principle, that "asymmetries cancel." Here we investigate if, when and how the symmetries can be different.
Hussain, Ibrar +2 more
openaire +3 more sources
Projective Collineations in Warped Product Manifolds and (PRS)n Manifolds
, 2023 The current work first explores projective collineations on pseudo-Riemannian manifolds. Projective collineations, curvature collineations, and Ricci curvature collineations are examined in relation to one another.
Sameh Shenawy +3 more
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Differential phase tracking applied to Bragg gratings in multi-core fibre for high accuracy curvature measurement [PDF]
, 2006 High resolution quasi-static and dynamic curvature measurements are made by differential interferometric phase measurement of fibre Bragg gratings in separate cores of a multi-core fibre.
Flockhart, G M H +2 more
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Hypersurfaces in a conformally flat space with curvature collineation [PDF]
International Journal of Mathematics and Mathematical Sciences, 1990 We classify the shape operators of Einstein and pseudo Einstein hypersurfaces in a conformally flat space with a symmetry called curvature collineation. We solve the fundamental problem of finding all possible forms of non‐diagonalizable shape operators.
K. L. Duggal, R. Sharma
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Symmetries of Lorentzian Three-Manifolds with Recurrent Curvature [PDF]
, 2016 Locally homogeneous Lorentzian three-manifolds with recurrect curvature are special examples of Walker manifolds, that is, they admit a parallel null vector field.
Zaeim, A. +3 more
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Mean curvature flow with triple junctions in higher space dimensions [PDF]
, 2012 We consider mean curvature ow of n-dimensional surface clusters. At (
Garcke, Harald +2 more
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PROPER CURVATURE COLLINEATIONS IN NONSTATIC SPHERICALLY SYMMETRIC SPACE–TIMES [PDF]
International Journal of Modern Physics A, 2008 A study of nonstatic spherically symmetric space–times according to their proper curvature collineations is given by using the rank of the 6×6 Riemann matrix and direct integration techniques. Studying proper curvature collineations in each case of the above space–times it is shown that when the above space–times admit proper curvature collineations ...
Shabbir, Ghulam, Ramzan, M.
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Matter collineations of Bianchi V spacetime [PDF]
, 2005 Matter collineations of the Bianchi V spacetime are studied according to degenerate or non-degenerate energy-momentum tensor. We have found that in degenerate case there are infinitely many matter collineations, whereas two cases give finite number of ...
Camci, U
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PROPER CURVATURE COLLINEATIONS IN KANTOWSKI–SACHS AND BIANCHI TYPE III SPACETIMES [PDF]
Modern Physics Letters A, 2007 A study of Kantowski–Sachs and Bianchi type III spacetimes according to their proper curvature collineations is given by using the rank of the 6×6 Riemann matrix and direct integration techniques. It is shown that when the above spacetimes admit proper curvature collineations, they form an infinite dimensional vector space.
Shabbir, Ghulam, Mehmood, Abu Bakar
openaire +2 more sources