局部傅里叶变换与D-模的刚性
Local Fourier transforms and rigidity for D-modules
摘要:
局部傅里叶变换,类似于$\ell$ -进傅里叶变换,被构造用于$k((t))$上的连接.根据Katz的一个程序,证明了曲线上的亚纯联络是刚性的,即由奇点处的局部数据确定,当且仅当满足一定的上同调条件。我们证明了刚性指数在傅里叶变换下是不变的。
英文摘要:
Local Fourier trnasforms, analogous to the $\ell$-adic Fourier transforms, are constructed for connections over $k((t))$. Following a program of Katz, a meromorphic connection on a curve is shown to be rigid, i.e. determined by local data at the singularities, if and only if a certain cohomological condition is satisfied. We show that the index of rigidity is invariant under Fourier transform.
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