The paper gives an A-infinity functor strategy to compute Namikawa-Weyl groups for quiver varieties with symplectic resolutions, and uses it to reproduce Yaochen Wu's classification.
On the exceptional fibres of Kleinian singularities
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Calabi-Yau techniques for Namikawa-Weyl groups
The paper gives an A-infinity functor strategy to compute Namikawa-Weyl groups for quiver varieties with symplectic resolutions, and uses it to reproduce Yaochen Wu's classification.