Almost Contact B−metric Structure on 5−Dimensional Nilpotent Lie Algebras

Almost Contact B−metric Structure on 5−Dimensional Nilpotent Lie Algebras

The classification of almost contact B−metric manifolds is considered. It is shown thatD−homothetic deformation of these manifolds in the class Fi (i = 0, 1, 4, 5) remains in the samethe class Fi. We study almost contact B−metric structure on 5−dimensional nilpotent Lie algebras.The class of the left invariant almost contact B−metric structures on corresponding Lie groups isinvestigated. Finally, we determine the class of 5−dimensional nilpotent Lie algebras with almostcontact B−metric structure.

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  • [1] Bulut, ¸S.: D−homothetic deformation on almost contact B-metric manifolds. J. of Geo. 110(23), (2019).
  • [2] Chinea, D., Gonzalez, C.: A classification of almost contact metric manifolds. An.Sti.Univ."Al.I.Cuza"Iasi. 30, 75-79 (1984).
  • [3] Dixmier, J.: Sur les representations unitaires des groupes de Lie nilpotentes III. Canadian Journal of Mathematics. 10, 321-348 (1958).
  • [4] Ganchev, G., Borisov, A.: Note on almost contact manifolds with Norden metric. Compt. Rend. Acad. Bulg. Sci. 39, 31-34 (1986).
  • [5] Ganchev, G., Mihova, V., Gribachev, K.: Almost contact manifolds with B−metric. Mathematica Balkanica. 7, 261-276 (1993).
  • [6] Manev, M.: Curvature properties on some classes of almost contact manifolds with B−metric. Compt. Rend. Acad. Bulg. Sci. 65 (4), 283-290 (2012).
  • [7] Manev, H.: On the structure tensors of almost of contact B−metric Manifolds. Filomat. 29(3), 427-436 (2015).
  • [8] Morimoto, A.: On normal almost contact structures. J. Math. Soc. Japan. 15, 420-436 (1963).
  • [9] Özdemir, N., Solgun, M., Aktay, ¸S.: Almost contact metric structures on 5-dimensional nilpotent Lie algebras. Symmetry. 76(8), (2016).