Calculation of ℓ-adic local Fourier transformations

Calculation of ℓ-adic local Fourier transformations
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ℓ-adic 局部傅立叶变换的计算

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发表时间:
2007
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通讯作者:
Lei Fu
Lei Fu
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作者:
Lei Fu

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本文计算了一类$${overline{mathbb Q}_ell}$$-层的局部Fourier变换。特别地,我们验证了Laumon和Malgrange的一个猜想[18,2.6.3].作为应用,我们计算了Katz [15]引入的超几何层的局部单值性.我们还讨论了D-模的Turrittin-Levelt定理的特征p模拟。
We calculate the local Fourier transformations for a class of $${overline{mathbb Q}_ell}$$-sheaves. In particular, we verify a conjecture of Laumon and Malgrange [18, 2.6.3]. As an application, we calculate the local monodromy of ℓ-adic hypergeometric sheaves introduced by Katz [15]. We also discuss the characteristic p analogue of the Turrittin-Levelt Theorem for D-modules.