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Un contre-exemple sur les families de courbes gauches

 

作者: Samir AÏt-Amrane,   Daniel Perrin,  

 

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

页码: 6003-6015

 

ISSN:0092-7872

 

年代: 2000

 

DOI:10.1080/00927870008827201

 

出版商: Gordon and Breach Science Publishers Ltd.

 

关键词: Hilbert Scheme;composants;triads;Mots-clés;Schéma De Hilbert;composants;triades;14H

 

数据来源: Taylor

 

摘要:

In this paper we give an example of two composantsXandX,oof the Hilbert scheme of space curves (i.e. components of subschemes with constant cohomology) satisfying the condition of semi-continuity (the cohomology of curves inXis less than the cohomology of curves inX,o) but not the propertyX0⋂[Xbar]≠Ø.

 

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