Poisson-cohomology conjecture for symplectic resolutions

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Let WW be a symplectic variety, let Z→WZ \to W be a symplectic resolution, and let HP∗(W)HP^*(W) denote the Poisson cohomology of WW.

Poisson-cohomology conjecture. There is an isomorphism of vector spaces

H∗(Z,C)≃HP∗(W).H^*(Z,\mathbb C) \simeq HP^*(W).

In particular, HP∗(W)HP^*(W) is finite-dimensional.

The claim is known when WW is smooth, and the supplied text gives partial verification for quotient varieties in low cohomological degrees; the general statement remains open.

References

Primary source

Baohua Fu, “A survey on symplectic singularities and resolutions”, arXiv:math/0510346 (2005).

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