Singular del Pezzo surfaces that are equivariant compactifications
Abstract
We determine which singular del Pezzo surfaces are equivariant compactifications of Ga2, to assist with proofs of Manin's conjecture for such surfaces. Additionally, we give an example of a singular quartic del Pezzo surface that is an equivariant compactification of a semidirect product of Ga and Gm.
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