The homotopy category of flat modules, and Grothendieck duality

The homotopy category of flat modules, and Grothendieck duality
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DOI:
10.1007/s00222-008-0131-0
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发表时间:
2008-08
影响因子:
3.1
通讯作者:
A. Neeman
A. Neeman
中科院分区:
数学1区
文献类型:
--
作者:
A. Neeman

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设R为环。证明了同伦范畴K(R-Proj)总是紧生成的,并且依赖于环R,它可能是也可能不是紧生成的.我们用它来描述K(R-Proj)作为K(R-Flat)的商。值得注意的事实是,这种新的描述ofK(R-Proj)推广到非仿射计划,这将出现在Murfet的论文。
LetRbe a ring. We prove that the homotopy categoryK(R-Proj) is always-compactly generated, and, depending on the ringR, it may or may not be compactly generated. We use this to give a description ofK(R-Proj) as a quotient ofK(R-Flat). The remarkable fact is that this new description ofK(R-Proj) generalizes to non-affine schemes; this will appear in Murfet’s thesis.