Instability of constant mean curvature surfaces of revolution in spherically symmetric spaces.
Sultana, Nahid (2008)
Balkan Journal of Geometry and its Applications (BJGA)
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Sultana, Nahid (2008)
Balkan Journal of Geometry and its Applications (BJGA)
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Peterson, Aaron, Taylor, Stephen (2008)
Balkan Journal of Geometry and its Applications (BJGA)
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Vacaru, Sergiu I. (2008)
SIGMA. Symmetry, Integrability and Geometry: Methods and Applications [electronic only]
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Narasimhamurthy, S.K., Aveesh, S.T., Nagaraja, H.G., Kumar, Pradeep (2009)
Acta Universitatis Apulensis. Mathematics - Informatics
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Aldea, Nicoleta, Purcaru, Monica (2008)
Novi Sad Journal of Mathematics
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Munteanu, Gheorghe (2002)
Novi Sad Journal of Mathematics
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Yecheng Zhu, Wenming Hu (2013)
Archivum Mathematicum
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In this paper, we generalize the Hessian comparison theorems and Laplacian comparison theorems described in [16, 18], then give some applications under various curvature conditions.
Masal, Melek (2006)
Novi Sad Journal of Mathematics
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Zoltán Muzsnay, Péter T. Nagy (2012)
Communications in Mathematics
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The aim of this paper is to determine explicitly the algebraic structure of the curvature algebra of the 3-dimensional Heisenberg group with left invariant cubic metric. We show, that this curvature algebra is an infinite dimensional graded Lie subalgebra of the generalized Witt algebra of homogeneous vector fields generated by three elements.