On Normality of Projective Hypersurfaces with an Additive Action

Ivan Arzhantsev, Ivan Beldiev, Yulia Zaitseva

We study projective hypersurfaces $X$ admitting an induced additive action, i.e., an effective action ${\mathbb{G}}_a^m\times X\to X$ of the vector group ${\mathbb{G}}_a^m$ with an ope…