Introduces the relative Rees algebra of Ga,S-actions on relative affine schemes, establishes its basic properties, and applies it to examples from locally nilpotent derivations and families of affine threefolds.
Seshadri, Triviality of vector bundles over the affine space K 2, Proc
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Rees algebras of additive group actions
Introduces the relative Rees algebra of Ga,S-actions on relative affine schemes, establishes its basic properties, and applies it to examples from locally nilpotent derivations and families of affine threefolds.