Corpus ID: 8454989

WEBSTER’S FUNCTORS

@inproceedings{Losev2016WEBSTERSF,
  title={WEBSTER’S FUNCTORS},
  author={I. Losev},
  year={2016}
}
We start with a warm-up: we explain Nakajima’s construction of the geometric sl2-action on ⊕ vHmid(T ∗Gr(v, w)). 1.1. Warm-up: Nakajima’s geometric action. The lagrangian subvariety φ−1(0) ⊂ M(v) is easily seen to be the zero section Gr(v, w) ⊂ T ∗Gr(v, w). Indeed, consider the action of C× on M(v) induced from the C×-action on T ∗R by fiberwise dilations. Under the identification ofM(v) with T ∗Gr(v, w), we get the action by fiberwise dilations. Note that φ−1(0) is compact and C×-stable. The… Expand

References

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