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math.GT2016
G-corks & Heegaard Floer Homology
Biji Wong
Recently Auckly-Kim-Melvin-Ruberman showed that for any finite subgroup G of SO(4) there exists a contractible 4-manifold with an effective G-action on its boundary so that the twi…
math.GT2016
Turaev Torsion Invariants of 3-orbifolds
Biji Wong
We construct a combinatorial invariant of 3-orbifolds with singular set a link that generalizes the Turaev torsion invariant of 3-manifolds. We give several gluing formulas from wh…