Clader, Damiolini, Li, Ramadas — Wonderful Compactifications And Rational Curves With Cyclic Action (2023)

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Emily Clader, Chiara Damiolini, Shiyue Li, Rohini Ramadas. Wonderful Compactifications and Rational Curves with Cyclic Action. Forum of Mathematics, Sigma. 2023.

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Abstract

We prove that the moduli space of rational curves with cyclic action, constructed in our previous work, is realizable as a wonderful compactification of the complement of a hyperplane arrangement in a product of projective spaces. By proving a general result on such wonderful compactifications, we conclude that this moduli space is Chowequivalent to an explicit toric variety (whose fan can be understood as a tropical version of the moduli space), from which a computation of its Chow ring follows.