Iranian Mathematical Society (IMS) Bulletin of the Iranian Mathematical Society 1017-060X 38 2 2012 07 15 Some vector fields on a riemannian manifold with semi-symmetric metric connection479 490 en Füsun Özen Zengin Istanbul Technical University Sezgin Altay Demirbag Istanbul Technical University S. Aynur Uysal Dogus University Hülya Bagdatli Yilmaz Marmara University 2010 07 19 Semi-symmetric metric connection sectional curvature conformally flat manifold pseudo symmetric manifold concircular vector field