An approach to higher ramification theory
An approach to higher ramification theory
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更高层次理论的方法
DOI:
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发表时间:
2000
期刊:
影响因子:
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通讯作者:
I. Zhukov
中科院分区:
文献类型:
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作者:
I. Zhukov
which is a higher dimensional analogue of Herbrand’s theore m. However, if one defines a generalization of the Hasse–Herbrand function and lower r amification filtration, then for n > 1 the lower filtration on a subgroup does not coincide with the i nduced filtration in general. Below we shall give another construction of the ramification filtration of L/K in the two-dimensional case; details can be found in [Z], see also[KZ]. This construction can be considered as a development of an approach by K. Kato an d T. Saito in[KS].