首页   按字顺浏览 期刊浏览 卷期浏览 Resolutions of subsets of finite sets of points in projective space
Resolutions of subsets of finite sets of points in projective space

 

作者: Steven P. Diaz,   Anthony V. Geramita,   Juan C. Migliore,  

 

期刊: Communications in Algebra  (Taylor Available online 2000)
卷期: Volume 28, issue 12  

页码: 5715-5733

 

ISSN:0092-7872

 

年代: 2000

 

DOI:10.1080/00927870008827184

 

出版商: Gordon and Breach Science Publishers Ltd.

 

数据来源: Taylor

 

摘要:

Given a finite setX, of points in projective space for which the Hilbert function is known, a standard result says that there exists a subset of this finite set whose Hilbert function is"as big as possible"insideX. Given a finite set of points in projective space for which the minimal free resolution of its homogeneous ideal is known, what can be said about possible resolutions of ideals of subsets of this finite set? We first give a maximal rank type description of the most generic possible resolution of a subset. Then we show, via two very different kinds of counterexamples, that this generic resolution is not always achieved. However, we show that it is achieved for sets of points in projective two space: given any finite set of points in projective two space for which the minimal free resolution is known, there must exist a subset having the predicted resolution.

 

点击下载:  PDF (814KB)



返 回