Quasi-projectivity conjecture for singular Kähler–Ricci shrinkers

Let (X,dX)(X,d_X) be the singular Kähler–Ricci shrinker arising as the metric soliton modeled on the F\mathbb{F}-limit described in the paper, with regular part (RX,gX,ωX,JX,fX)(\mathcal{R}_X,g_X,\omega_X,J_X,f_X). Quasi-projectivity conjecture. XX admits a polarized Fano fibration structure and hence is a quasi-projective variety. This conjecture extends quasi-projectivity results for smooth Kähler–Ricci shrinkers to the singular setting and is motivated by boundedness results for Fano varieties; its resolution is not established in the supplied context.

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Primary source

Max Hallgren and Junsheng Zhang, “Singular Kähler-Ricci Shrinkers are Complex Analytic”, arXiv:2605.25213 (2026).

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