Iranian Mathematical Society (IMS) Bulletin of the Iranian Mathematical Society 1017-060X 38 4 2012 12 15 Para-Kahler tangent bundles of constant para-holomorphic sectional curvature955 972 en Simona-Luiza Druta-Romaniuc Department of Sciences, Al. I. Cuza University 2010 09 29 natural lifts almost product structures para-Hermitian structures para-K"ahler structures para-holomorphic sectional curvature