Toroidal compactification conjecture for elliptic-surface moduli

About 3 years old · traced to

Let F‾R\overline{F}^R be the compactification obtained from stable semi-log-canonical pairs (S‾,ϵR)(\overline S,\epsilon R), let (F‾R)ν(\overline{F}^R)^\nu denote its normalization, and let D/Γ‾F\overline{\mathcal D/\Gamma}^{\mathfrak F} be a toroidal compactification of the period-domain quotient for a suitable fan F\mathfrak F.

Toroidal compactification conjecture. There is a morphism

(F‾R)ν→D/Γ‾F(\overline{F}^R)^\nu\to\overline{\mathcal D/\Gamma}^{\mathfrak F}

to some toroidal compactification, for an appropriately chosen fan F\mathfrak F.

The conjecture asks whether the normalization of the KSBA compactification retains enough period information to map to a toroidal compactification. An analogous result is known for elliptic K3 surfaces, but no resolution is supplied here for the elliptic surfaces under consideration.

References

Primary source

Philip Engel, François Greer and Abigail Ward, “Periods of elliptic surfaces with p_g=q=1”, arXiv:2308.04563 (2024).

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.