CONCIRCULAR CURVATURE TENSOR ON ALMOST KENMOTSU MANIFOLDS ADMITTING THE NULLITY DISTRIBUTIONS

The object of the present paper is to study almost Kenmotsu manifolds with characteristic vector field $\xi$ belonging to some nullity distributions, considering concircular curvature tensor. Locally $\phi$-concircularly symmetric almost Kenmotsu manifolds, concircularly $\phi$-recurrent almost Kenmotsu manifolds and locally concircularly $\phi$-recurrent three-dimensional almost Kenmotsu manifolds are studied. And we have obtained some interesting results.