Generators of $D$–modules in positive characteristic
Generators of $D$–modules in positive characteristic
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$D$ 的生成器——具有积极特征的模块
DOI:
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发表时间:
2005
期刊:
影响因子:
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通讯作者:
G. Lyubeznik
中科院分区:
文献类型:
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作者:
Josep Alvarez;Manuel Blickle;G. Lyubeznik
Let R = k[x1, . . . , xd] or R = k[[x1, . . . , xd]] be either a
polynomial or a formal power series ring in a finite number of variables
over a field k of characteristic p > 0 and let DR|k be the ring of klinear
differential operators of R. In this paper we prove that if f is
a non-zero element of R then Rf , obtained from R by inverting f, is
generated as a DR|k–module by 1
f . This is an amazing fact considering
that the corresponding characteristic zero statement is very false. In
fact we prove an analog of this result for a considerably wider class of
rings R and a considerably wider class of DR|k-modules.