Results 31 to 40 of about 94,727 (290)
Journal of Numerical Analysis and Approximation Theory, 2023 This paper establishes convergence rates and error estimates for the pseudo-polyharmonic div-curl and elastic interpolation. This type of interpolation is based on a combination of the divergence and the curl of a multivariate vector field and ...
Mohammed-Najib Benbourhim +2 more
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On CR-Lightlike Product of an Indefinite Kaehler Manifold
International Journal of Mathematics and Mathematical Sciences, 2011 We have studied mixed foliate CR-lightlike submanifolds and CR-lightlike product of an indefinite Kaehler manifold and also obtained relationship between them.
Rakesh Kumar +2 more
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Umbilicity of (Space-Like) Submanifolds of Pseudo-Riemannian Space Forms [PDF]
Journal of Sciences, Islamic Republic of Iran, 2009 We study umbilic (space-like) submanifolds of pseudo-Riemannian space forms, then define totally semi-umbilic space-like submanifold of pseudo Euclidean space and relate this notion to umbilicity.
S.M.B. Kashani
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On the rotation matrices in the semi-euclidean space
Communications, Faculty Of Science, University of Ankara Series A1Mathematics and Statistics, 2006 Chong ve Andrews $E^3$' de dönme matrisleri üzerine çalışmışlardır[2]. Bu çalışmada, $E^3_1$ de Cayley formülü, Andrews' un sonuçlarında bazı değişiklikler yapılarak genelleştirilip, yarı- antisimetrik bir matristen elde ediliyor. Ayrıca Cayley formülü üzerine bazı sonuçlar veriliyor. Chong and Andrews studied on the rotations matrix in $E^3$ [2].
openaire +3 more sources
On the decidability of connectedness constraints in 2D and 3D Euclidean spaces
, 2011 We investigate (quantifier-free) spatial constraint languages with equality, contact and connectedness predicates as well as Boolean operations on regions, interpreted over low-dimensional Euclidean spaces. We show that the complexity of reasoning varies
Yavor Nenov +11 more
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International Journal of Mathematics and Mathematical Sciences, 1999 In this paper, we give two weak conditions for a lower semi-continuous function on the n-dimensional Euclidean space Rn to be a convex function. We also present some results for convex functions, strictly convex functions, and quasi-convex functions.
Yu-Ru Syau
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A twistorial description of the IKKT-matrix model
Journal of High Energy Physics, 2022 We consider the fuzzy 4-sphere S N 4 $$ {S}_N^4 $$ as a background in the IKKT matrix model, and explore the relation between S N 4 $$ {S}_N^4 $$ and fuzzy twistor space in the semi-classical limit.
Harold C. Steinacker, Tung Tran
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Mathematics, 2022 In this study, a link between the squared norm of the second fundamental form and the Laplacian of the warping function for a warped product pointwise semi-slant submanifold Mn in a complex projective space is presented.
Ali H. Alkhaldi +3 more
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Real hypersurfaces of indefinite Kaehler manifolds
International Journal of Mathematics and Mathematical Sciences, 1993 We show the existence of ( ϵ )-almost contact metric structures and give examples of ( ϵ )-Sasakian manifolds. Then we get a classification theorem for real hypersurfaces of indefinite complex space-forms with parallel structure vector field.
A. Bejancu, K. L. Duggal
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Semi-classical analysis of the string theory cigar
Journal of High Energy Physics, 2021 We study the semi-classical limit of the reflection coefficient for the SL(2, ℝ) k /U(1) CFT. For large k, the CFT describes a string in a Euclidean black hole of 2-dimensional dilaton-gravity, whose target space is a cigar with an asymptotically linear ...
Daniel Louis Jafferis, Elliot Schneider
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