Equivariant Embeddings of Commutative Linear Algebraic Groups of Corank One

@inproceedings{Arzhantsev2015EquivariantEO,
  title={Equivariant Embeddings of Commutative Linear Algebraic Groups of Corank One},
  author={Ivan Arzhantsev and Polina Kotenkova},
  year={2015}
}
Let K be an algebraically closed field of characteristic zero, Gm = (K \ {0},×) be its multiplicative group, and Ga = (K,+) be its additive group. Consider a commutative linear algebraic group G = (Gm) r × Ga. We study equivariant G-embeddings, i.e. normal G-varieties X containing G as an open orbit. We prove that X is a toric variety and all such actions… CONTINUE READING