The quantum cohomology conjecture for crepant resolutions of the anticanonical cone

About 20 years old · traced to

Let A=Spec⁡⨁n≥0H0(wP,−nK)A=\operatorname{Spec}\bigoplus_{n\geq0}H^0(w\mathbb{P},-nK) be the anticanonical affine cone over the weighted projective space wPw\mathbb{P}, and let A~→A\widetilde{A}\to A be a crepant resolution. Let HH be the hypergeometric differential operator associated with the construction, and let HredH^{\mathrm{red}} denote its reduced operator. Quantum cohomology conjecture. The equation Hφ=0H\varphi=0 is the quantum ordinary differential equation of the small quantum cohomology QH∙A~QH^\bullet\widetilde{A}, while Hredφ=0H^{\mathrm{red}}\varphi=0 is a direct summand of that quantum differential equation. Moreover, QH∙A~QH^\bullet\widetilde{A} is closely related to an appropriate variant of the small quantum orbifold cohomology QHorb∙AQH^\bullet_{\mathrm{orb}}A. This comparison is suggested by the McKay correspondence and the relationship between the cohomology of a crepant resolution and orbifold cohomology; the supplied text does not state whether the proposed relationship has been proved.

References

Primary source

Alessio Corti and Vasily Golyshev, “Hypergeometric Equations and Weighted Projective Spaces”, arXiv:math/0607016 (2006).

Progress summary

Never refreshed

Nothing recorded yet. Refresh searches the literature and the public web for attempts on this problem, and writes the first summary here.

Solutions 0

No solutions have been posted yet.