The existence of an aspherical 4-manifold with Euler characteristic one
Let be an oriented closed aspherical -manifold, and let denote its Euler characteristic.
Aspherical 4-manifold Euler-characteristic problem. There exists an oriented closed aspherical -manifold with
This is presented as an open problem in -dimensional topology and is used to motivate the preceding question about fillings of aspherical -manifolds. No example or obstruction is supplied in the source.
References
Primary source
Clara Loeh, Marco Moraschini and George Raptis, “On the simplicial volume and the Euler characteristic of (aspherical) manifolds”, arXiv:2109.08115 (2022).
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