Mathematics – Differential Geometry
Scientific paper
2010-07-04
Mathematics
Differential Geometry
Scientific paper
Main interest of the present paper is to investigate the almost {\alpha}-cosymplectic manifolds for which the characteristic vector field of the almost {\alpha}-cosymplectic structure satisfies a specific ({\kappa},{\mu},{\nu})-nullity condition. This condition is invariant under D-homothetic deformation of the almost cosymplectic ({\kappa},{\mu},{\nu})-spaces in all dimensions. Also, we prove that for dimensions greater than three, {\kappa},{\mu},{\nu} are not necessary constant smooth functions such that df^{\eta}=0. Then the existence of the three-dimensional case of almost cosymplectic ({\kappa},{\mu},{\nu})-spaces are studied. Finally, we construct an appropriate example of such manifolds.
Aktan Nesip
Murathan Cengizhan
Öztürk Hakan
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