Almost tangent and cotangent structures in the large

G. Thompson, U. Schwardmann
1991 Transactions of the American Mathematical Society  
We examine some global properties of integrable almost tangent and cotangent manifolds. In particular, we extend several results which essentially characterize tangent and cotangent bundles as, respectively, regular almost tangent and cotangent structures.
doi:10.1090/s0002-9947-1991-1012509-x fatcat:ln3jyojyunggpidldscoxgbrzq