QUAESTIONES MATHEMATICAE, cilt.38, sa.4, ss.495-504, 2015 (SCI-Expanded)
The object of the present paper is to study certain curvature conditions on generalized Sasakian space-forms. We classify generalized Sasakian space-forms which satisfy P P=0, P Z=0, Z P=0, Z Z=0, where P is the projective curvature tensor and Z is the concircular curvature tensor.