The Grassmannian–Pfaffian categorical HP-duality conjecture

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Let WW be a vector space of dimension mm, and let Pf⁡(2k,W)\operatorname{Pf}(2k,W) denote the closure of the locus of bivectors in Λ2W\Lambda^2W of rank 2k2k. Let Gr⁡(2,W)=Pf⁡(2,W)\operatorname{Gr}(2,W)=\operatorname{Pf}(2,W) be the Grassmannian in its Plücker embedding, and let W∨W^\vee be the dual vector space. Grassmannian–Pfaffian HP-duality conjecture. For any kk there is a homological-projective duality between appropriate minimal categorical resolutions of Pf⁡(2k,W)\operatorname{Pf}(2k,W) and Pf⁡(2(⌊m/2⌋−k),W∨)\operatorname{Pf}(2(\lfloor m/2\rfloor-k),W^\vee). When m=dim⁡Wm=\dim W is odd, these resolutions are strongly crepant. This proposes a higher-Pfaffian extension of Grassmannian–Pfaffian duality; the source gives no resolution.

References

Primary source

Alexander Kuznetsov, “Semiorthogonal decompositions in algebraic geometry”, arXiv:1404.3143 (2015).

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