Finiteness of the topological fundamental group of an irreducible symplectic regular locus
Finiteness of the topological fundamental group of an irreducible symplectic regular locus
Let be an irreducible symplectic variety, and let denote its regular locus. Write for the topological fundamental group of .
Finiteness conjecture. The group is finite:
The algebraic fundamental group of the regular locus is known to be finite, but the corresponding assertion for the topological fundamental group is posed as an open question.
Sources & referencesView supporting material
Primary source
Philip Engel, Stefano Filipazzi, François Greer, Mirko Mauri and Roberto Svaldi, “Boundedness of some fibered K-trivial varieties”, arXiv:2507.00973 (2025).
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