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The algebraic Montgomery–Yang problem for rational homology projective planes
Let $S$ be a rational homology projective plane, meaning a normal projective complex surface whose Betti numbers are the same as those of $\mathbb{CP}^2$ . Assume that $S$ has quoti…
Conjecturesolvedalgebraic-surfaces quotient-singularities rational-homology-projective-planesarXiv posted 2 days ago

The algebraic Montgomery–Yang problem for rational homology projective planes