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2 results

  • A Characterization of Real Hypersurfaces in Complex Space Forms in Terms of the Ricci Tensor

  • Christos Baikoussis
  • Journal:
    Canadian Mathematical Bulletin / Volume 40 / Issue 3 / 01 September 1997
    Published online by Cambridge University Press:
    20 November 2018, pp. 257-265
    Print publication:
    01 September 1997
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  • We study real hypersurfaces of a complex space form Mn(c), c ≠ 0 under certain conditions of the Ricci tensor on the orthogonal distribution T0.

  • The Abbena-Thurston Manifold as a Critical Point

  • Joon-Sik Park, Won Tae Oh
  • Journal:
    Canadian Mathematical Bulletin / Volume 39 / Issue 3 / 01 September 1996
    Published online by Cambridge University Press:
    20 November 2018, pp. 352-359
    Print publication:
    01 September 1996
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  • The Abbena-Thurston manifold (M,g) is a critical point of the functional where Q is the Ricci operator and R is the scalar curvature, and then the index of I(g) and also the index of — I(g) are positive at (M,g).