What "percentage" (in a meaningful sense of the term) of Type F groups are not Poincare duality groups (over any coefficient ring, in particular, over $\mathbb{F}_2$)? Of course, it's an open question when a Type F Poincare duality group is the fundamental group of an aspherical manifold.
2026-03-29 05:43:36.1774763016
What Percentage of Type F Groups are not Poincare Duality Groups?
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