论文标题
抛物线亚组的单一自由基不变的场
Fields of invariants for unipotent radicals of parabolic subgroups
论文作者
论文摘要
该论文致力于在不变的领域中寻找自由群体对仿射品种的行为的问题。我们考虑当单位群是在经典型GL(N),SL(N),O(N),O(N)或SP(2N)中的任意抛物线亚组中的单位群中的单位自由基时的情况。在明确的形式中,我们在不变的领域中提出了一个自由发生器的系统,用于通过共轭在还原基团对还原组的作用。
The paper is devoted to the problem of finding free generators in the fields of invariants for actions of unipotent groups on affine varieties. We consider the case when the unipotent group is the unipotent radical in an arbitrary parabolic subgroup in the reductive group of classical type GL(n), SL(n), O(n) or Sp(2n). In the explicit form, we present a system of free generators in the field of invariants for the action of the unipotent radical on the reductive group by conjugation.