Small-angle metric degeneration conjecture for classes (ℵ)(\aleph) and (ℶ)(\beth)

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Let (S,C,ωβ)(S,C,\omega_\beta) be Kähler–Einstein edge pairs of class (ℵ)(\aleph) or (ℶ)(\beth), where ωβ\omega_\beta has angle β\beta along CC. Let ω∞\omega_\infty denote a generalized Kähler–Einstein metric on the complement S∖CS\setminus C.

Small-angle metric degeneration conjecture. As β\beta tends to zero, (S,C,ωβ)(S,C,\omega_\beta) converges in an appropriate sense to a generalized Kähler–Einstein metric ω∞\omega_\infty on S∖CS\setminus C. In class (ℵ)(\aleph), ω∞\omega_\infty is a Calabi–Yau metric; in class (ℶ)(\beth), it is a cylinder along each generic fiber.

This conjecture describes the expected geometric limit underlying the uniformization conjecture. The source does not specify the precise notion of convergence, and the assertion remains open there.

References

Primary source

Ivan A. Cheltsov and Yanir A. Rubinstein, “Asymptotically log Fano varieties”, arXiv:1308.2503 (2013).

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