Projective Dimension and the Singular Locus

Projective Dimension and the Singular Locus
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射影维数和奇异轨迹

DOI:
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发表时间:
2003
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通讯作者:
H. Schoutens
H. Schoutens
中科院分区:
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文献类型:
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作者:
H. Schoutens

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摘要对于noether局部环,奇异轨迹上的素理想完全决定了有限生成模直至直接和、扩展和合的范畴。由此导出了检验任意模是否具有有限射影维数的几个简单同调判据。
Abstract For a Noetherian local ring, the prime ideals in the singular locus completely determine the category of finitely generated modules up to direct summands, extensions and syzygies. From this some simple homological criteria are derived for testing whether an arbitrary module has finite projective dimension.