The structure of F-pure rings
The structure of F-pure rings
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F-纯环的结构
DOI:
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发表时间:
2003
期刊:
影响因子:
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通讯作者:
Florian Enescu
中科院分区:
文献类型:
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作者:
Ian M. Aberbach;Florian Enescu
Abstract.For a reduced F-finite ring R of characteristic p>0 and q=pe one can write where Mq has no free direct summands over R. We investigate the structure of F-finite, F-pure rings R by studying how the numbers aq grow with respect to q. This growth is quantified by the splitting dimension and the splitting ratios of R which we study in detail. We also prove the existence of a special prime ideal (R) of R, called the splitting prime, that has the property that R/(R) is strongly F-regular. We show that this ideal captures significant information with regard to the F-purity of R.