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    • Keywords


      Locally conformal almost cosymplectic manifold; invariant submanifold; semi-invariant submanifold; δM-invariant; squared mean curvature

    • Abstract


      For submanifolds tangent to the structure vector field in locally conformal almost cosymplectic manifolds of pointwise constantφ-sectional curvature, we establish a basic inequality between the main intrinsic invariants of the submanifold on one side, namely its sectional curvature and its scalar curvature; and its main extrinsic invariant on the other side, namely its squared mean curvature. Some applications including inequalities between the intrinsic invariantδM and the squared mean curvature are given. The equality cases are also discussed.

    • Author Affiliations


      Mukut Mani Tripathi1 Jeong-Sik Kim2 Seon-Bu Kim3

      1. Department of Mathematics and Astronomy, Lucknow University, Lucknow - 226 007, India
      2. Department of Mathematics Education, Sunchon National University, Sunchon - 540-742, Korea
      3. Department of Mathematics, Chonnam National University, Kwangju - 500-757, Korea
    • Dates

  • Proceedings – Mathematical Sciences | News

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      Posted on July 25, 2019

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