Hypertrees, projections, and moduli of stable rational curves
classification
🧮 math.AG
keywords
curvesdivisorsgivehypertreesmodulirationalstablecalled
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We give a conjectural description for the cone of effective divisors of the Grothendieck-Knudsen moduli space of stable rational curves with n marked points. Namely, we introduce new combinatorial structures called hypertrees and show they give exceptional divisors with many remarkable properties.
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