ANR homology 4-manifold conjecture for Poincaré 4-complexes with free fundamental group

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Let X4X^4 be a Poincaré 44--complex whose fundamental group is a free product of pp copies of Z\mathbb{Z}:

π1(X4)≅∗1pZ.\pi_1(X^4)\cong \mathop{*}\limits_1^p \mathbb{Z}.

Free-fundamental-group conjecture. Then X4X^4 is (simple) homotopy equivalent to an ANR homology 44--manifold.

The preceding discussion establishes that the total surgery obstruction vanishes for the Poincaré 4-complexes considered there, making this a proposed special case of the broader four-dimensional surgery problem. The supplied source gives no resolution.

References

Primary source

Friedrich Hegenbarth and Dušan Repovš, “Some recent approaches in 4-dimensional surgery theory”, arXiv:math/0608794 (2006).

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