On flat fibrations by the affine line
On flat fibrations by the affine line
A recent joint work [1] of Dolgarv and Veisfeiler studies in the main the geometric structures of unipotent group schemes over an integral ring.As a natural generalization of their own results the following conjecture is set forth (see [1, 3.8.3ff]).Let b: X S be a fiat affine morphism of finite …