Abstract
AbstractThe Turaev–Viro state sum invariant can be extended to 3-manifolds with free boundaries. We use this fact to describe generalized Frobenius–Schur indicators as Turaev–Viro invariants of solid tori. This provides a geometric understanding of the $$\mathrm {SL}(2,\mathbb {Z})$$
SL
(
2
,
Z
)
-equivariance of these indicators.
Funder
Deutsche Forschungsgemeinschaft
Publisher
Springer Science and Business Media LLC
Subject
Mathematical Physics,Statistical and Nonlinear Physics
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