Circle bundles over 4-manifolds
arXiv:math/0502469
Abstract
Every 1-connected topological 4-manifold M admits a -covering by $#_{r-1}S^{2}\times S^{3}$, where rank$H^{2}(M;\QTR{Bbb}{Z})$.
arXiv comment6 pages to appear in Archiv der Math
arXiv:math/0502469
Every 1-connected topological 4-manifold M admits a -covering by $#_{r-1}S^{2}\times S^{3}$, where rank$H^{2}(M;\QTR{Bbb}{Z})$.
arXiv comment6 pages to appear in Archiv der Math