Turaev torsion invariants of 3-orbifolds |
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Authors: | Biji Wong |
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Institution: | 1.Department of Mathematics,Brandeis University,Waltham,USA |
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Abstract: | 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 which we derive two consequences. The first is an understanding of how the components of the invariant change when we remove a curve from the singular set. The second is a formula relating the invariant of the 3-orbifold to the Turaev torsion invariant of the underlying 3-manifold in the case when the singular set is a nullhomologous knot. |
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