The Signature of the Chern Coefficients of Local Rings

Details The Signature of the Chern Coefficients of Local Rings The Signature of the Chern Coefficients of Local Rings

2008-07-17

arxiv.org/abs/0807.2686v2

Mathematics

Commutative Algebra

Example 3.8 (in pages 8-9) is revised

Scientific paper

This paper considers the following conjecture: If $R$ is an unmixed, equidimensional local ring that is a homomorphic image of a Cohen-Macaulay local ring, then for any ideal $J$ generated by a system of parameters, the Chern coefficient $e_1(J)< 0$ is equivalent to $R$ being non Cohen-Macaulay. The conjecture is established if $R$ is a homomorphic image of a Gorenstein ring, and for all universally catenary integral domains containing fields. Criteria for the detection of Cohen-Macaulayness in equi-generated graded modules are derived.

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