Analysis reveals that Kähler–Einstein metrics with positive curvature exist near log terminal singularities, suggesting new properties of volume invariants.
We analyze the existence of Kähler–Einstein metrics of positive curvature in the neighborhood of a germ of a log terminal singularity ( X , p ). This boils down to solving a Dirichlet problem for certain complex Monge–Ampère equations. We establish a Moser–Trudinger inequality (MT)γ in subcritical regimes γ<γcrit(X,p) and show the existence of smooth solutions in those cases. We show that the expected critical exponent γ̃crit(X,p)=((n+1)/n) vol(X,p)1/n can be expressed in terms of the normalized volume, an important algebraic invariant of the singularity.
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Guedj et al. (2025) studied this question.
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