Systems of quadratic inequalities
Systems of quadratic inequalities
复制标题
二次不等式系统
DOI:
10.1112/plms/pds010
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发表时间:
2010
影响因子:
1.8
通讯作者:
Antonio Lerario
中科院分区:
文献类型:
--
作者:
A. Agrachev;Antonio Lerario
We present a spectral sequence which efficiently computes Betti numbers of a closed semi‐algebraic subset of ℝPn defined by a system of quadratic inequalities and the image of the homology homomorphism induced by the inclusion of this subset in ℝPn. We do not restrict ourselves to the term E2 of the spectral sequence and give a simple explicit formula for the differential d2.