1–efficient triangulations and the index of a cusped hyperbolic 3–manifold
1–efficient triangulations and the index of a cusped hyperbolic 3–manifold
In this paper we will promote the 3D index of an ideal triangulation T of an oriented cusped 3-manifold M (a collection of q-series with integer coefficients, introduced by Dimofte-Gaiotto-Gukov) to a topological invariant of oriented cusped hyperbolic 3-manifolds. To achieve our goal we show that (a) T admits an …