Abstract
The main result provides mild conditions under which a closed, orientable, PL 4-manifold N = N1#N2 with π1(N e) residually finite (e = 1,2) is a codimension-5 PL fibrator. The paper also presents a rich variety of conditions on a closed 4-manifold N 4 under which every PL map between manifolds, where the domain is orientable and all point inverses are copies of N4, must be an approximate fibration.
Original language | English |
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Pages (from-to) | 206-222 |
Number of pages | 17 |
Journal | Journal of the London Mathematical Society |
Volume | 68 |
Issue number | 1 |
DOIs | |
State | Published - Aug 2003 |