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Circle bundles over 4-manifolds

Authors:	Haibao Duan Chao Liang

Affiliation:	(1) Institute of Mathematics, Chinese Academy of Sciences, Beijing, 100080, China;(2) Department of Mathematics, Peking University, Beijing, 100871, China

Abstract:	Every 1-connected topological 4-manifold M admits a S¹-covering by # _{r − 1} S² × S³, where $r = {text{rank }}H^2 left( {M;mathbb{Z}} right).$ Received: 4 July 2004

Keywords:	57M50 (55R25)
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