Models of affine curves and Ga-actions
arXiv:1802.08147
Abstract
Using the approach of Barkatou and El Kaoui, we classify certain affine curves over discrete valuation rings having a free additive group action. Our classification generalizes results of Miyanishi in equi-characteristic 0.
Proceedings Arc schemes and Singularities, World Scientific Publishing, pp. 113-119 (2020)