Jian-Shi-Song's convergence conjecture for cscK metrics on manifolds with semi-ample canonical bundle

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Let (M,ω0)(M,\omega_0) be a compact Kähler manifold with semi-ample canonical bundle KMK_M. Let c1(M)=[Ric⁡(ω0)]c_1(M)=[\operatorname{Ric}(\omega_0)] and consider any sequence of cscK metrics in the Kähler class −c1(M)+ε[ω0]-c_1(M)+\varepsilon[\omega_0], where ε>0\varepsilon>0 is sufficiently small. Let gcang_{\mathrm{can}} be the twisted Kähler–Einstein metric on the canonical model McanM_{\mathrm{can}}, and let Φ:M→Mcan\Phi:M\to M_{\mathrm{can}} be the canonical map. Jian-Shi-Song's convergence conjecture. Any such sequence converges to gcang_{\mathrm{can}} both globally in Gromov–Hausdorff topology and locally in smooth topology away from the singular fibres of Φ\Phi. This conjecture concerns the degeneration of cscK metrics toward the canonical model; the source abstract says that the paper confirms it partially by proving smooth convergence on compact subsets away from a subvariety, while the stated global Gromov–Hausdorff and full local convergence remain unresolved in the supplied text.

References

Primary source

Wanxing Liu, “Convergence of cscK metrics on smooth minimal models of general type”, arXiv:2012.09934 (2021).

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