Isoparametric and Dupin hypersurfaces.
Cecil, Thomas E. (2008)
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
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Cecil, Thomas E. (2008)
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
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Abhitosh Upadhyay, Ram Shankar Gupta (2011)
Publications de l'Institut Mathématique
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Deshmukh, Sharief (2009)
Acta Mathematica Academiae Paedagogicae Nyí regyháziensis. New Series [electronic only]
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Balkan Journal of Geometry and its Applications (BJGA)
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Perdomo, Oscar (2004)
Revista Colombiana de Matemáticas
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Colloquium Mathematicae
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Kim, Seonhui, Lee, Hyunjin, Yang, Hae Young (2011)
Bulletin of the Malaysian Mathematical Sciences Society. Second Series
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Mileva Prvanović (2007)
Bulletin, Classe des Sciences Mathématiques et Naturelles, Sciences mathématiques
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Krishan Duggal (2012)
Open Mathematics
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This paper deals with a family of lightlike (null) hypersurfaces (H u) of a Lorentzian manifold M such that each null normal vector ℓ of H u is not entirely in H u, but, is defined in some open subset of M around H u. Although the family (H u) is not unique, we show, subject to some reasonable condition(s), that the involved induced objects are independent of the choice of (H u) once evaluated at u = constant. We use (n+1)-splitting Lorentzian manifold to obtain a normalization of ℓ...
Gregory Galloway (1997)
Banach Center Publications
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Atindogbé, Cyriaque (2009)
APPS. Applied Sciences
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