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Topological mapping class groups of non-simply connected 4-manifolds

Cha, Jae Choon
arXiv (All) · Papers
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57k40geometric-topology
We construct topological isotopy invariants of homeomorphisms of non-simply connected 4-manifolds using the topological Dax invariant of disks and the Freedman-Quinn invariant of spheres. Our invariants are effective for various non-smoothable 4-manifolds without assuming that the fundamental groups
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