Rational cubic fourfolds in Hassett divisors
classification
🧮 math.AG
keywords
cubicfourfoldshassettrationalcodimension-twocontainsdivisordivisors
read the original abstract
We prove that every Hassett's Noether-Lefschetz divisor of special cubic fourfolds contains a union of three codimension-two subvarieties, parametrizing rational cubic fourfolds, in the moduli space of smooth cubic fourfolds.
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