The KSBA moduli space of stable log Calabi–Yau surfaces
Forum of Mathematics, Pi, Tome 13 (2025) no. 1, p. e22

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We prove that every irreducible component of the coarse Kollár-Shepherd-Barron and Alexeev (KSBA) moduli space of stable log Calabi–Yau surfaces admits a finite cover by a projective toric variety. This verifies a conjecture of Hacking–Keel–Yu. The proof combines tools from log smooth deformation theory, the minimal model program, punctured log Gromov–Witten theory, and mirror symmetry.
Alexeev, Valery; Arguz, Hulya; Bousseau, Pierrick. The KSBA moduli space of stable log Calabi–Yau surfaces. Forum of Mathematics, Pi, Tome 13 (2025) no. 1, p. e22. doi: 10.1017/fmp.2025.10014
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